[data views] Support include_unmapped in field caps request

[mattkime]

Summary

Allows data views API getFieldsForWildcard to support include_unmapped param.

Closes #144772

[elasticmachine]

Pinging @elastic/kibana-data-discovery (Team:DataDiscovery)

[davismcphee]

Code only review, LGTM! Only thing is I'm not sure it closes #144772 if that issue was intended for the actual getFieldsForIndexPattern implementation (not clear to me from the issue description).

@kertal @jughosta Should we close #144772 with this and spin off another issue for the getFieldsForIndexPattern implementation, or just link this PR to the existing issue and leave it open?

[mattkime]

@davismcphee Its unclear to me what further work is needed so I'll let others make that decision. Past that, getFieldsForIndexPattern supports include_unmapped - updating GetFieldsOptions was the change closest to getFieldsForIndexPattern, the rest is just passing the argument through to the request.

[kibana-ci]

💚 Build Succeeded

• Buildkite Build
• Commit: 735b3fa

Metrics [docs]

Public APIs missing comments

Total count of every public API that lacks a comment. Target amount is 0. Run node scripts/build_api_docs --plugin [yourplugin] --stats comments for more detailed information.

id	before	after	diff
data	2553	2555	+2
dataViews	227	228	+1
total			+3

Page load bundle

Size of the bundles that are downloaded on every page load. Target size is below 100kb

id	before	after	diff
dataViews	45.5KB	45.5KB	+37.0B

Unknown metric groups

API count

id	before	after	diff
data	3265	3267	+2
dataViews	1021	1022	+1
total			+3

ESLint disabled in files

id	before	after	diff
osquery	1	2	+1

ESLint disabled line counts

id	before	after	diff
enterpriseSearch	19	21	+2
fleet	59	65	+6
osquery	109	115	+6
securitySolution	443	449	+6
total			+20

Total ESLint disabled count

id	before	after	diff
enterpriseSearch	20	22	+2
fleet	68	74	+6
osquery	110	117	+7
securitySolution	520	526	+6
total			+21

History

• 💚 Build #92665 succeeded dfa7c25
• 💚 Build #92529 succeeded ab9b9d2
• 💔 Build #92526 failed 130be01

To update your PR or re-run it, just comment with:
@elasticmachine merge upstream

[kertal]

#144772 can be closed, the follow up task would be to integrate in the the Unified Field List, so the follow up issue needs to be written, fleshed out, right @jughosta ?
#145796

[jughosta]

Yes, we can close #144772 and keep #145796

Thanks for implementing the change!