[Monitoring] Skip cluster/overview and standalone_cluster/overview api integration tests for cloud

[chrisronline]

Relates to #29966

Tests

These two tests, cluster/overview and standalone_cluster/overview, need to be skipped for cloud.

Error

The error we get when running on cloud:

             │       + expected - actual
             │ 
             │                "status": "green"
             │              }
             │            }
             │            "isCcrEnabled": true
             │       -    "isPrimary": false
             │       +    "isPrimary": true

Reason

This fails because the local functional test server starts with a specific uuid for kibana, that apparently cloud isn't replicating. It's starting with a different UUID and this test doesn't account for that. Because of that, it doesn't think the single kibana running is the primary one.

[elasticmachine]

Pinging @elastic/stack-monitoring