fix: Git provider endpoint validation

[olexii4]

What does this PR do?

This PR fixes Git provider endpoint validation.

What issues does this PR fix or reference?

fixes eclipse-che/che#23013

[che-bot]

Click here to review and test in web IDE:

[openshift-ci]

@olexii4: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/v14-e2e-puppeteer	84478a8	link	true	/test v14-e2e-puppeteer
ci/prow/v14-dashboard-happy-path	84478a8	link	true	/test v14-dashboard-happy-path
ci/prow/v14-images	84478a8	link	true	/test v14-images

Full PR test history. Your PR dashboard.

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[github-actions]

Docker image build succeeded: quay.io/eclipse/che-dashboard:pr-1140

kubectl patch command

kubectl patch -n eclipse-che "checluster/eclipse-che" --type=json -p="[{"op": "replace", "path": "/spec/components/dashboard/deployment", "value": {containers: [{image: "quay.io/eclipse/che-dashboard:pr-1140", name: che-dashboard}]}}]"

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: akurinnoy, ibuziuk, olexii4

The full list of commands accepted by this bot can be found here.

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[devstudio-release]

Build 3.16 :: dashboard_3.x/505: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: sync-to-downstream_3.x/7043: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: get-sources-rhpkg-container-build_3.x/7016: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: push-latest-container-to-quay_3.x/4703: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: get-sources-rhpkg-container-build_3.x/7016:

dashboard : 3.x :: Build 62344649 : quay.io/devspaces/dashboard-rhel8:3.16-3
SUCCESS; copied to quay; /DS_CI/push-latest-container-to-quay_3.x/4703 triggered

[devstudio-release]

Build 3.16 :: dashboard_3.x/505:

Upstream sync done; /DS_CI/sync-to-downstream_3.x/7043 triggered

[devstudio-release]

Build 3.16 :: update-digests_3.x/6935: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: operator-bundle_3.x/3171: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: sync-to-downstream_3.x/7045: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: get-sources-rhpkg-container-build_3.x/7020: Console, Changes, Git Data

[devstudio-release]

Build 3.16 :: get-sources-rhpkg-container-build_3.x/7020:

devspaces-operator-bundle : 3.x :: Failed in 62349867 : BREW:BUILD/STATUS:UNKNOWN
FAILURE:; copied to quay