[APM] Migrate /test/apm_api_integration/tests/inspect/ to be deployment-agnostic API tests

[rmyz]

API	ESS	Serverless	Test files
GET /internal/apm/environments	✅	❌	ESS: ./test/apm_api_integration/tests/inspect/inspect.spec.ts

[iblancof]

The APM inspect test suite relies on Agent Configuration, which, based on my checks, isn’t available in Serverless. Therefore, we can’t migrate this to be deployment-agnostic.

1)    Serverless Observability - Deployment-agnostic api integration tests
   │       APM
   │         inspect
   │           Inspect feature
   │             "before all" hook in "Inspect feature":
   │
   │      ResponseError: security_exception
   │ 	Root causes:
   │ 		security_exception: action [indices:admin/create] is unauthorized for user [testing-internal] with effective roles [superuser] on restricted indices [.ml-config], this action is granted by the index privileges [create_index,manage,all]
   │       at SniffingTransport._request (node_modules/@elastic/transport/src/Transport.ts:602:17)
   │       at processTicksAndRejections (node:internal/process/task_queues:95:5)
   │       at /Users/ireneblanco/Desktop/Projects/kibana/node_modules/@elastic/transport/src/Transport.ts:708:22
   │       at SniffingTransport.request (node_modules/@elastic/transport/src/Transport.ts:705:14)
   │       at Indices.create (node_modules/@elastic/elasticsearch/src/api/api/indices.ts:290:12)
   │       at attemptToCreate (create_index_stream.ts:162:9)
   │       at handleIndex (create_index_stream.ts:228:5)
   │       at Transform.transform [as _transform] (create_index_stream.ts:238:13)
   │
   │
   │2)    Serverless Observability - Deployment-agnostic api integration tests
   │       APM
   │         inspect
   │           Inspect feature
   │             "after all" hook in "Inspect feature":
   │
   │      ResponseError: security_exception
   │ 	Root causes:
   │ 		security_exception: action [indices:admin/delete] is unauthorized for user [testing-internal] with effective roles [superuser] on restricted indices [.ml-config], this action is granted by the index privileges [delete_index,manage,all]
   │       at SniffingTransport._request (node_modules/@elastic/transport/src/Transport.ts:602:17)
   │       at processTicksAndRejections (node:internal/process/task_queues:95:5)
   │       at /Users/ireneblanco/Desktop/Projects/kibana/node_modules/@elastic/transport/src/Transport.ts:708:22
   │       at SniffingTransport.request (node_modules/@elastic/transport/src/Transport.ts:705:14)
   │       at Indices.delete (node_modules/@elastic/elasticsearch/src/api/api/indices.ts:394:12)
   │       at deleteIndex (delete_index.ts:45:5)
   │       at Transform.transform [as _transform] (delete_index_stream.ts:53:13)
   │
   │

cc: @crespocarlos

[iblancof]

Reopening since we can run the tests with 8.0.0 instead of apm_8.0.0 (as suggested in #199817 (comment)), which includes the .ml-config index and isn’t compatible with serverless.

[iblancof]

The APM inspect test suite relies on Agent Configuration, which, based on my checks, isn’t available in Serverless. Therefore, we can’t migrate this to be deployment-agnostic.

I’ll exclude the test using Agent Configuration from the migration; the rest can be migrated using 8.0.0 instead of apm_8.0.0.