feat(elasticsearch): Optimize search relavancy

[david-leifker]

• Stemming
• Synonyms
• URN (full or partial) search
• Autocomplete improvements
• Adds test fixture for search tests
• Updates ES to 7.10 from 7.9

Built on PR 6269

Checklist

• [x] The PR conforms to DataHub's Contributing Guideline (particularly Commit Message Format)
• [x] Links to related issues (if applicable)
• [x] Tests for the changes have been added/updated (if applicable)
• [x] Docs related to the changes have been added/updated (if applicable). If a new feature has been added a Usage Guide has been added for the same.
• [x] For any breaking change/potential downtime/deprecation/big changes an entry has been made in Updating DataHub

[github-actions[bot]]

Unit Test Results (metadata ingestion)

       8 files  ±0         8 suites  ±0   1h 1m 47s :stopwatch: + 1m 21s    752 tests ±0     749 :heavy_check_mark:  - 1  2 :zzz: ±0  1 :x: +1  1 506 runs  ±0  1 500 :heavy_check_mark:  - 1  5 :zzz: ±0  1 :x: +1 

For more details on these failures, see this check.

Results for commit 82b9f64a. ± Comparison against base commit eeb7a9df.

:recycle: This comment has been updated with latest results.

[github-actions[bot]]

Unit Test Results (build & test)

357 tests   - 276   357 :heavy_check_mark:  - 272   51s :stopwatch: - 14m 56s   97 suites  -   65       0 :zzz:  -     4    97 files    -   65       0 :x: ±    0 

Results for commit 82b9f64a. ± Comparison against base commit eeb7a9df.

This pull request removes 276 tests.

com.datahub.authentication.authenticator.AuthenticatorChainTest ‑ testAuthenticateFailure
com.datahub.authentication.authenticator.AuthenticatorChainTest ‑ testAuthenticateSuccess
com.datahub.authentication.authenticator.AuthenticatorChainTest ‑ testAuthenticateThrows
com.datahub.authentication.authenticator.DataHubSystemAuthenticatorTest ‑ testAuthenticateFailureMismatchingCredentials
com.datahub.authentication.authenticator.DataHubSystemAuthenticatorTest ‑ testAuthenticateFailureMissingAuthorizationHeader
com.datahub.authentication.authenticator.DataHubSystemAuthenticatorTest ‑ testAuthenticateFailureMissingBasicCredentials
com.datahub.authentication.authenticator.DataHubSystemAuthenticatorTest ‑ testAuthenticateSuccessDelegatedActor
com.datahub.authentication.authenticator.DataHubSystemAuthenticatorTest ‑ testAuthenticateSuccessNoDelegatedActor
com.datahub.authentication.authenticator.DataHubSystemAuthenticatorTest ‑ testInit
com.datahub.authentication.authenticator.DataHubTokenAuthenticatorTest ‑ testAuthenticateFailureInvalidToken
…

:recycle: This comment has been updated with latest results.