Revert commits back to after 2.11 release

[mengweieric]

Description

Revert commits back to after 2.11 release.

Action performed

git revert 3024737fe~23..3024737fe

Issues Resolved

#2417

Check List

• New functionality includes testing.
  • All tests pass, including unit test, integration test and doctest
• New functionality has been documented.
  • New functionality has javadoc added
  • New functionality has user manual doc added
• Commits are signed per the DCO using --signoff

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.
For more information on following Developer Certificate of Origin and signing off your commits, please check here.

[codecov]

Codecov Report

Merging #2423 (ebd8ce5) into 2.11 (3024737) will increase coverage by 1.68%.
The diff coverage is 100.00%.

@@             Coverage Diff              @@
##               2.11    #2423      +/-   ##
============================================
+ Coverage     95.60%   97.28%   +1.68%     
+ Complexity     5022     4552     -470     
============================================
  Files           479      399      -80     
  Lines         14050    11843    -2207     
  Branches        934      788     -146     
============================================
- Hits          13432    11522    -1910     
+ Misses          598      316     -282     
+ Partials         20        5      -15     

Flag	Coverage Δ
sql-engine	97.28% <100.00%> (+1.68%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
...ql/datasources/rest/RestDataSourceQueryAction.java	0.00% <ø> (ø)
...sql/datasources/service/DataSourceServiceImpl.java	100.00% <ø> (ø)
...ces/transport/TransportCreateDataSourceAction.java	100.00% <100.00%> (ø)
...ces/transport/TransportDeleteDataSourceAction.java	100.00% <ø> (ø)
...ources/transport/TransportGetDataSourceAction.java	100.00% <ø> (ø)
...ces/transport/TransportUpdateDataSourceAction.java	100.00% <ø> (ø)
...rch/sql/datasources/utils/XContentParserUtils.java	100.00% <ø> (+1.09%)	⬆️
...rch/sql/opensearch/setting/OpenSearchSettings.java	100.00% <ø> (ø)

... and 43 files with indirect coverage changes