[Backport 2.x] [Segment Replication] Moving RecoveryState.Index to a top-level class and renaming

[Rishikesh1159]

Signed-off-by: Rishikesh1159 [email protected]

Description

This PR backports PR to 2.x branch and resolve conflict in RecoveryState class.

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[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/880/
• CommitID: f3d9799

[tlfeng]

Looks good! I validated the change is the same with the original PR, and RecoveryState class is used internally and not used by other plugins.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/881/
• CommitID: f3d9799

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/882/
• CommitID: c950c34

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/884/
• CommitID: c950c34

[codecov-commenter]

Codecov Report

Merging #3971 (c950c34) into 2.x (da244c2) will decrease coverage by 0.12%.
The diff coverage is 75.42%.

@@             Coverage Diff              @@
##                2.x    #3971      +/-   ##
============================================
- Coverage     70.65%   70.53%   -0.13%     
- Complexity    56401    56429      +28     
============================================
  Files          4526     4527       +1     
  Lines        271757   271758       +1     
  Branches      39979    39976       -3     
============================================
- Hits         192000   191674     -326     
- Misses        63578    63957     +379     
+ Partials      16179    16127      -52     

Impacted Files	Coverage Δ
...g/opensearch/indices/recovery/MultiFileWriter.java	83.83% <ø> (ø)
...java/org/opensearch/index/shard/StoreRecovery.java	67.82% <50.00%> (-0.35%)	⬇️
...ch/indices/recovery/PeerRecoveryTargetService.java	52.36% <50.00%> (ø)
...org/opensearch/indices/recovery/RecoveryState.java	56.88% <66.66%> (-9.87%)	⬇️
...ces/replication/common/ReplicationLuceneIndex.java	75.87% <75.87%> (ø)
...rg/opensearch/indices/recovery/RecoveryTarget.java	75.41% <100.00%> (ø)
...java/org/opensearch/client/indices/DataStream.java	0.00% <0.00%> (-76.09%)	⬇️
.../opensearch/client/indices/CloseIndexResponse.java	17.50% <0.00%> (-73.75%)	⬇️
...a/org/opensearch/client/cluster/SniffModeInfo.java	0.00% <0.00%> (-62.50%)	⬇️
.../java/org/opensearch/node/NodeClosedException.java	50.00% <0.00%> (-50.00%)	⬇️
... and 543 more

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