[Moving] Move Observability Onboarding folder into `/x-pack/observabi…

…lity_solution` (elastic#177458)

## Summary

This PR is part of the initiative to consolidate Observability plugins
into `x-pack/plugins/observability_solution`.

This PR is strictly a move and an update in references.

This was discussed and agreed upon with the Observability org in the
Observability Office Hours meeting at the end of 2023.

## Related PRs:
- [ ] [Move APM ](elastic#177433)
- [x] [Move Data Quality](elastic#177456)
- [x] [Move Exploratory
View](elastic#177440)
- [ ] [Move Infra](elastic#177443)
- [X] Move Logs Explorer
- [x] [Move Observability AI
Assistant](elastic#177427)
- [ ] [Move Observability
App](elastic#177437)
- [ ] [Move Observability
Onboarding](elastic#177458) <-- you are
here
- [x] [Move Observability
Shared](elastic#177463)
- [x] [Move Profiling](elastic#177453)
- [ ] [Move Synthetics](elastic#177464) 
- [ ] [Move Uptime](elastic#177466)
- [x] [Move UX](elastic#177470)

---------

Co-authored-by: kibanamachine <42973632+kibanamachine@users.noreply.github.com>

.buildkite/ftr_configs.yml

@@ -33,9 +33,9 @@ disabled:
   - x-pack/test/defend_workflows_cypress/cli_config.ts
   - x-pack/test/defend_workflows_cypress/config.ts
   - x-pack/test/defend_workflows_cypress/serverless_config.ts
-  - x-pack/plugins/observability_onboarding/e2e/ftr_config_open.ts
-  - x-pack/plugins/observability_onboarding/e2e/ftr_config_runner.ts
-  - x-pack/plugins/observability_onboarding/e2e/ftr_config.ts
+  - x-pack/plugins/observability_solution/observability_onboarding/e2e/ftr_config_open.ts
+  - x-pack/plugins/observability_solution/observability_onboarding/e2e/ftr_config_runner.ts
+  - x-pack/plugins/observability_solution/observability_onboarding/e2e/ftr_config.ts
   - x-pack/test/osquery_cypress/cli_config.ts
   - x-pack/test/osquery_cypress/serverless_cli_config.ts
   - x-pack/test/osquery_cypress/config.ts

.buildkite/scripts/steps/functional/observability_onboarding_cypress.sh

@@ -13,5 +13,5 @@ echo "--- Observability onboarding Cypress Tests"
 
 cd "$XPACK_DIR"
 
-node plugins/observability_onboarding/scripts/test/e2e.js \
+node plugins/observability_solution/observability_onboarding/scripts/test/e2e.js \
   --kibana-install-dir "$KIBANA_BUILD_LOCATION" \

.eslintrc.js

@@ -915,8 +915,9 @@ module.exports = {
         'x-pack/plugins/observability_solution/exploratory_view/**/*.tsx',
         'x-pack/plugins/infra/**/*.tsx',
         'x-pack/plugins/observability/**/*.tsx',
-        'x-pack/plugins/observability_shared/observability_ai_assistant/**/*.tsx',
-        'x-pack/plugins/observability_onboarding/**/*.tsx',
+        'x-pack/plugins/observability_solution/observability_onboarding/**/*.tsx',
+        'x-pack/plugins/observability_solution/observability_ai_assistant/**/*.tsx',
+        'x-pack/plugins/observability_solution/observability_onboarding/**/*.tsx',
         'x-pack/plugins/observability_solution/observability_shared/**/*.tsx',
         'x-pack/plugins/observability_solution/profiling/**/*.tsx',
         'x-pack/plugins/synthetics/**/*.tsx',
@@ -933,8 +934,9 @@ module.exports = {
         'x-pack/plugins/observability_solution/exploratory_view/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
         'x-pack/plugins/infra/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
         'x-pack/plugins/observability/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
+        'x-pack/plugins/observability_solution/observability_onboarding/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
         'x-pack/plugins/observability_solution/observability_ai_assistant/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
-        'x-pack/plugins/observability_onboarding/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
+        'x-pack/plugins/observability_solution/observability_onboarding/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
         'x-pack/plugins/observability_solution/observability_shared/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
         'x-pack/plugins/observability_solution/profiling/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',
         'x-pack/plugins/synthetics/**/!(*.stories.tsx|*.test.tsx|*.storybook_decorator.tsx|*.mock.tsx)',

.github/CODEOWNERS

@@ -575,7 +575,7 @@ x-pack/packages/observability/alerting_test_data @elastic/obs-ux-management-team
 x-pack/test/cases_api_integration/common/plugins/observability @elastic/response-ops
 x-pack/packages/observability/get_padded_alert_time_range_util @elastic/obs-ux-management-team
 x-pack/plugins/observability_solution/observability_logs_explorer @elastic/obs-ux-logs-team
-x-pack/plugins/observability_onboarding @elastic/obs-ux-logs-team
+x-pack/plugins/observability_solution/observability_onboarding @elastic/obs-ux-logs-team
 x-pack/plugins/observability @elastic/obs-ux-management-team
 x-pack/plugins/observability_solution/observability_shared @elastic/observability-ui
 x-pack/test/security_api_integration/plugins/oidc_provider @elastic/kibana-security

api_docs/deprecations_by_plugin.mdx

@@ -1212,8 +1212,8 @@ tags: ['contributor', 'dev', 'apidocs', 'kibana']
 
 | Deprecated API | Reference location(s) | Remove By |
 | ---------------|-----------|-----------|
-| <DocLink id="kibKibanaReactPluginApi" section="def-public.KibanaThemeProvider" text="KibanaThemeProvider"/> | [app.tsx](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_onboarding/public/application/app.tsx#:~:text=KibanaThemeProvider), [app.tsx](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_onboarding/public/application/app.tsx#:~:text=KibanaThemeProvider), [app.tsx](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_onboarding/public/application/app.tsx#:~:text=KibanaThemeProvider) | - |
-| <DocLink id="kibKbnCoreElasticsearchServerPluginApi" section="def-common.ElasticsearchServiceSetup.legacy" text="legacy"/> | [plugin.ts](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_onboarding/server/plugin.ts#:~:text=legacy) | - |
+| <DocLink id="kibKibanaReactPluginApi" section="def-public.KibanaThemeProvider" text="KibanaThemeProvider"/> | [app.tsx](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_solution/observability_onboarding/public/application/app.tsx#:~:text=KibanaThemeProvider), [app.tsx](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_solution/observability_onboarding/public/application/app.tsx#:~:text=KibanaThemeProvider), [app.tsx](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_solution/observability_onboarding/public/application/app.tsx#:~:text=KibanaThemeProvider) | - |
+| <DocLink id="kibKbnCoreElasticsearchServerPluginApi" section="def-common.ElasticsearchServiceSetup.legacy" text="legacy"/> | [plugin.ts](https://github.com/elastic/kibana/tree/main/x-pack/plugins/observability_solution/observability_onboarding/server/plugin.ts#:~:text=legacy) | - |