[7.9] Removes timestamp_field from data_stream (#71727)

[tylersmalley]

Backports the following commits to 7.9:

• Removes timestamp_field from data_stream (Removes timestamp_field from data_stream #71727)

[kibanamachine]

💛 Build succeeded, but was flaky

• continuous-integration/kibana-ci/pull-request
• Commit: 9904aaf
• Flaky suites:
  • xpack-kibana-ciGroup7

---

Test Failures

Kibana Pipeline / kibana-xpack-agent / X-Pack EPM API Integration Tests.x-pack/test/ingest_manager_api_integration/apis/epm/install·ts.Ingest Manager Endpoints installs packages that include settings and mappings overrides should install the overrides package correctly

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Failed Tests Reporter:
  - Test has not failed recently on tracked branches

[00:00:00]       │
[00:00:00]         └-: Ingest Manager Endpoints
[00:00:00]           └-> "before all" hook
[00:00:01]           └-: installs packages that include settings and mappings overrides
[00:00:01]             └-> "before all" hook
[00:00:01]             └-> should install the overrides package correctly
[00:00:01]               └-> "before each" hook: global before each
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57254, url.original: /search?package=overrides&internal=true&experimental=true&kibana.version=7.9.0
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57258, url.original: /package/overrides/0.1.0
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57262, url.original: /package/overrides/0.1.0/
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57266, url.original: /search?kibana.version=7.9.0
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57270, url.original: /package/overrides/0.1.0
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57274, url.original: /package/overrides/0.1.0/
[00:00:01]               │ info [o.e.c.m.MetadataMappingService] [kibana-ci-immutable-debian-tests-xl-1594830974218976516] [.kibana_1/BC6qzTXZRA6oCvYsIwBsog] update_mapping [_doc]
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57278, url.original: /search?kibana.version=7.9.0
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57282, url.original: /package/overrides/0.1.0
[00:00:01]               │ info [docker:registry] 2020/07/15 17:55:30 source.ip: 172.17.0.1:57286, url.original: /package/overrides/0.1.0/
[00:00:02]               └- ✖ fail: Ingest Manager Endpoints installs packages that include settings and mappings overrides should install the overrides package correctly
[00:00:02]               │      Error: expected 200 "OK", got 409 "Conflict"
[00:00:02]               │       at Test._assertStatus (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:268:12)
[00:00:02]               │       at Test._assertFunction (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:283:11)
[00:00:02]               │       at Test.assert (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:173:18)
[00:00:02]               │       at assert (/dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:131:12)
[00:00:02]               │       at /dev/shm/workspace/kibana/node_modules/supertest/lib/test.js:128:5
[00:00:02]               │       at Test.Request.callback (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/index.js:718:3)
[00:00:02]               │       at parser (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/index.js:906:18)
[00:00:02]               │       at IncomingMessage.res.on (/dev/shm/workspace/kibana/node_modules/superagent/lib/node/parsers/json.js:19:7)
[00:00:02]               │       at endReadableNT (_stream_readable.js:1145:12)
[00:00:02]               │       at process._tickCallback (internal/process/next_tick.js:63:19)
[00:00:02]               │ 
[00:00:02]               │ 

Stack Trace

Error: expected 200 "OK", got 409 "Conflict"
    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)

---

Build metrics

✅ unchanged

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