[7.9] Fixed Webhook connector doesn't retain added HTTP header settings (#71924)

[YulNaumenko]

Backports the following commits to 7.9:

• Fixed Webhook connector doesn't retain added HTTP header settings (Fixed Webhook connector doesn't retain added HTTP header settings #71924)

[kibanamachine]

💛 Build succeeded, but was flaky

• continuous-integration/kibana-ci/pull-request
• Commit: b021eaf
• Flaky suites:
  • xpack-kibana-ciGroup6

---

Test Failures

Kibana Pipeline / kibana-xpack-agent / X-Pack API Integration Tests.x-pack/test/api_integration/apis/fleet/unenroll_agent·ts.apis Fleet Endpoints fleet_unenroll_agent allow to unenroll using a list of ids

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Failed Tests Reporter:
  - Test has failed 8 times on tracked branches: https://github.com/elastic/kibana/issues/64696

[00:00:00]       │
[00:00:00]         └-: apis
[00:00:00]           └-> "before all" hook
[00:07:42]           └-: Fleet Endpoints
[00:07:42]             └-> "before all" hook
[00:07:46]             └-: fleet_unenroll_agent
[00:07:46]               └-> "before all" hook
[00:07:46]               └-> "before all" hook
[00:07:46]                 │ info [fleet/agents] Loading "mappings.json"
[00:07:46]                 │ info [fleet/agents] Loading "data.json"
[00:07:46]                 │ info [o.e.c.m.MetadataDeleteIndexService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_2/3DKvQYqXR0ap6yXoUOcFNQ] deleting index
[00:07:46]                 │ info [o.e.c.m.MetadataDeleteIndexService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_1/y1TK-eA0Sp6WhCNNSfqElA] deleting index
[00:07:46]                 │ info [fleet/agents] Deleted existing index [".kibana_2",".kibana_1"]
[00:07:46]                 │ info [o.e.c.m.MetadataCreateIndexService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_1] creating index, cause [api], templates [], shards [1]/[0]
[00:07:46]                 │ info [fleet/agents] Created index ".kibana_1"
[00:07:46]                 │ debg [fleet/agents] ".kibana_1" settings {"index":{"auto_expand_replicas":"0-1","number_of_replicas":"0","number_of_shards":"1"}}
[00:07:46]                 │ info [fleet/agents] Indexed 12 docs into ".kibana"
[00:07:46]                 │ info [o.e.c.m.MetadataMappingService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_1/1mbtDPMvRSGWPcEiC5RLmg] update_mapping [_doc]
[00:07:46]                 │ debg Migrating saved objects
[00:07:46]                 │ proc [kibana]   log   [22:45:54.283] [info][savedobjects-service] Detected mapping change in "dynamic"
[00:07:46]                 │ proc [kibana]   log   [22:45:54.285] [info][savedobjects-service] Creating index .kibana_2.
[00:07:46]                 │ info [o.e.c.m.MetadataCreateIndexService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_2] creating index, cause [api], templates [], shards [1]/[1]
[00:07:46]                 │ info [o.e.c.r.a.AllocationService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] updating number_of_replicas to [0] for indices [.kibana_2]
[00:07:46]                 │ proc [kibana]   log   [22:45:54.364] [info][savedobjects-service] Migrating .kibana_1 saved objects to .kibana_2
[00:07:46]                 │ proc [kibana]   log   [22:45:54.377] [info][savedobjects-service] Pointing alias .kibana to .kibana_2.
[00:07:46]                 │ proc [kibana]   log   [22:45:54.428] [info][savedobjects-service] Finished in 144ms.
[00:07:46]               └-> "before all" hook
[00:07:46]                 │ info [o.e.c.m.MetadataMappingService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_2/LXpioan1Qey5ttzn43xdeQ] update_mapping [_doc]
[00:07:46]                 │ info [o.e.c.m.MetadataCreateIndexService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [logs-index_pattern_placeholder] creating index, cause [api], templates [], shards [1]/[1]
[00:07:46]                 │ info [o.e.c.m.MetadataCreateIndexService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [events-index_pattern_placeholder] creating index, cause [api], templates [], shards [1]/[1]
[00:07:46]                 │ info [o.e.c.m.MetadataCreateIndexService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [metrics-index_pattern_placeholder] creating index, cause [api], templates [], shards [1]/[1]
[00:07:47]                 │ proc [kibana]  error  [22:45:55.377] [warning][process] UnhandledPromiseRejectionWarning: Error: [epm-packages:endpoint]: version conflict, required seqNo [15], primary term [1]. current document has seqNo [16] and primary term [1]: [version_conflict_engine_exception] [epm-packages:endpoint]: version conflict, required seqNo [15], primary term [1]. current document has seqNo [16] and primary term [1], with { index_uuid="LXpioan1Qey5ttzn43xdeQ" & shard="0" & index=".kibana_2" }
[00:07:47]                 │ proc [kibana]     at respond (/dev/shm/workspace/install/kibana-7/node_modules/elasticsearch/src/lib/transport.js:349:15)
[00:07:47]                 │ proc [kibana]     at checkRespForFailure (/dev/shm/workspace/install/kibana-7/node_modules/elasticsearch/src/lib/transport.js:306:7)
[00:07:47]                 │ proc [kibana]     at HttpConnector.<anonymous> (/dev/shm/workspace/install/kibana-7/node_modules/elasticsearch/src/lib/connectors/http.js:173:7)
[00:07:47]                 │ proc [kibana]     at IncomingMessage.wrapper (/dev/shm/workspace/install/kibana-7/node_modules/lodash/lodash.js:4929:19)
[00:07:47]                 │ proc [kibana]     at IncomingMessage.emit (events.js:203:15)
[00:07:47]                 │ proc [kibana]     at endReadableNT (_stream_readable.js:1145:12)
[00:07:47]                 │ proc [kibana]     at process._tickCallback (internal/process/next_tick.js:63:19)
[00:07:47]                 │ proc [kibana]     at emitWarning (internal/process/promises.js:97:15)
[00:07:47]                 │ proc [kibana]     at emitPromiseRejectionWarnings (internal/process/promises.js:143:7)
[00:07:47]                 │ proc [kibana]     at process._tickCallback (internal/process/next_tick.js:69:34)
[00:07:47]                 │ proc [kibana]  error  [22:45:55.379] [warning][process] Error: [epm-packages:endpoint]: version conflict, required seqNo [15], primary term [1]. current document has seqNo [16] and primary term [1]: [version_conflict_engine_exception] [epm-packages:endpoint]: version conflict, required seqNo [15], primary term [1]. current document has seqNo [16] and primary term [1], with { index_uuid="LXpioan1Qey5ttzn43xdeQ" & shard="0" & index=".kibana_2" }
[00:07:47]                 │ proc [kibana]     at respond (/dev/shm/workspace/install/kibana-7/node_modules/elasticsearch/src/lib/transport.js:349:15)
[00:07:47]                 │ proc [kibana]     at checkRespForFailure (/dev/shm/workspace/install/kibana-7/node_modules/elasticsearch/src/lib/transport.js:306:7)
[00:07:47]                 │ proc [kibana]     at HttpConnector.<anonymous> (/dev/shm/workspace/install/kibana-7/node_modules/elasticsearch/src/lib/connectors/http.js:173:7)
[00:07:47]                 │ proc [kibana]     at IncomingMessage.wrapper (/dev/shm/workspace/install/kibana-7/node_modules/lodash/lodash.js:4929:19)
[00:07:47]                 │ proc [kibana]     at IncomingMessage.emit (events.js:203:15)
[00:07:47]                 │ proc [kibana]     at endReadableNT (_stream_readable.js:1145:12)
[00:07:47]                 │ proc [kibana]     at process._tickCallback (internal/process/next_tick.js:63:19)
[00:07:47]                 │ proc [kibana]  error  [22:45:55.411] [warning][process] PromiseRejectionHandledWarning: Promise rejection was handled asynchronously (rejection id: 111)
[00:07:47]                 │ proc [kibana]     at handledRejection (internal/process/promises.js:71:23)
[00:07:47]                 │ proc [kibana]     at promiseRejectHandler (internal/process/promises.js:36:14)
[00:07:47]                 │ proc [kibana]     at Promise.then (<anonymous>)
[00:07:47]                 │ proc [kibana]     at process._tickCallback (internal/process/next_tick.js:68:7)
[00:07:47]               └-> allow to unenroll using a list of ids
[00:07:47]                 └-> "before each" hook: global before each
[00:07:47]                 └-> "before each" hook
[00:07:47]                   │ proc [kibana]  error  [22:45:55.380]  Error: Internal Server Error
[00:07:47]                   │ proc [kibana]     at HapiResponseAdapter.toError (/dev/shm/workspace/install/kibana-7/src/core/server/http/router/response_adapter.js:132:19)
[00:07:47]                   │ proc [kibana]     at HapiResponseAdapter.toHapiResponse (/dev/shm/workspace/install/kibana-7/src/core/server/http/router/response_adapter.js:86:19)
[00:07:47]                   │ proc [kibana]     at HapiResponseAdapter.handle (/dev/shm/workspace/install/kibana-7/src/core/server/http/router/response_adapter.js:81:17)
[00:07:47]                   │ proc [kibana]     at Router.handle (/dev/shm/workspace/install/kibana-7/src/core/server/http/router/router.js:162:34)
[00:07:47]                   │ proc [kibana]     at process._tickCallback (internal/process/next_tick.js:68:7)
[00:07:47]                   │ info [o.e.c.m.MetadataMappingService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_2/LXpioan1Qey5ttzn43xdeQ] update_mapping [_doc]
[00:07:48]                   │ info [o.e.c.m.MetadataMappingService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_2/LXpioan1Qey5ttzn43xdeQ] update_mapping [_doc]
[00:07:48]                   │ info [o.e.c.m.MetadataMappingService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_2/LXpioan1Qey5ttzn43xdeQ] update_mapping [_doc]
[00:07:48]                   │ info [o.e.c.m.MetadataMappingService] [kibana-ci-immutable-ubuntu-16-tests-xl-1594935951673293978] [.kibana_2/LXpioan1Qey5ttzn43xdeQ] update_mapping [_doc]
[00:07:49]                 └- ✖ fail: apis Fleet Endpoints fleet_unenroll_agent allow to unenroll using a list of ids
[00:07:49]                 │      Error: expected 200 "OK", got 500 "Internal Server Error"
[00:07:49]                 │       at Test._assertStatus (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:268:12)
[00:07:49]                 │       at Test._assertFunction (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:283:11)
[00:07:49]                 │       at Test.assert (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:173:18)
[00:07:49]                 │       at assert (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:131:12)
[00:07:49]                 │       at /dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:128:5
[00:07:49]                 │       at Test.Request.callback (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/index.js:718:3)
[00:07:49]                 │       at parser (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/index.js:906:18)
[00:07:49]                 │       at IncomingMessage.res.on (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/parsers/json.js:19:7)
[00:07:49]                 │       at endReadableNT (_stream_readable.js:1145:12)
[00:07:49]                 │       at process._tickCallback (internal/process/next_tick.js:63:19)
[00:07:49]                 │ 
[00:07:49]                 │ 

Stack Trace

Error: expected 200 "OK", got 500 "Internal Server Error"
    at Test._assertStatus (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:268:12)
    at Test._assertFunction (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:283:11)
    at Test.assert (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:173:18)
    at assert (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:131:12)
    at /dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:128:5
    at Test.Request.callback (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/index.js:718:3)
    at parser (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/index.js:906:18)
    at IncomingMessage.res.on (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/parsers/json.js:19:7)
    at endReadableNT (_stream_readable.js:1145:12)
    at process._tickCallback (internal/process/next_tick.js:63:19)

---

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