connector transport actions and disable native memory CB

[Zhangxunmt]

Description

add connector transport actions and disable native memory circuit breakers.

Issues Resolved

[List any issues this PR will resolve]

Check List

• New functionality includes testing.
  • All tests pass
• New functionality has been documented.
  • New functionality has javadoc added
• Commits are signed per the DCO using --signoff

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[ylwu-amzn]

This class already included in Zan's PR: #1055

Update: I see why you have to add this class. The connector transport action depends on this class.

[Zhangxunmt]

The build is failing without this class. So let's merge this 1055 PR first.

[codecov]

Codecov Report

Merging #1056 (e2ea585) into 2.x (11b72bc) will decrease coverage by 2.16%.
The diff coverage is 2.17%.

@@             Coverage Diff              @@
##                2.x    #1056      +/-   ##
============================================
- Coverage     78.51%   76.36%   -2.16%     
+ Complexity     1978     1976       -2     
============================================
  Files           158      162       +4     
  Lines          8047     8275     +228     
  Branches        809      830      +21     
============================================
+ Hits           6318     6319       +1     
- Misses         1363     1589     +226     
- Partials        366      367       +1     

Flag	Coverage Δ
ml-commons	76.36% <2.17%> (-2.16%)	⬇️

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

Impacted Files	Coverage Δ
...tion/connector/DeleteConnectorTransportAction.java	0.00% <0.00%> (ø)
.../action/connector/GetConnectorTransportAction.java	0.00% <0.00%> (ø)
...tion/connector/SearchConnectorTransportAction.java	0.00% <0.00%> (ø)
...tion/connector/TransportCreateConnectorAction.java	0.00% <0.00%> (ø)
...opensearch/ml/breaker/MLCircuitBreakerService.java	100.00% <ø> (ø)
...va/org/opensearch/ml/indices/MLIndicesHandler.java	68.91% <0.00%> (-1.92%)	⬇️
...rg/opensearch/ml/plugin/MachineLearningPlugin.java	98.94% <ø> (ø)
...rg/opensearch/ml/breaker/MemoryCircuitBreaker.java	64.28% <16.66%> (-35.72%)	⬇️
...c/main/java/org/opensearch/ml/indices/MLIndex.java	93.33% <100.00%> (+0.47%)	⬆️
.../org/opensearch/ml/settings/MLCommonsSettings.java	100.00% <100.00%> (ø)

... and 1 file with indirect coverage changes