[Backport 2.x] Rename remote store stats field names

[opensearch-trigger-bot]

Backport 8fdd9b4 from #9763.

[github-actions]

Compatibility status:

Checks if related components are compatible with change 60efbca

Incompatible components

Incompatible components: [https://github.com/opensearch-project/neural-search.git, https://github.com/opensearch-project/sql.git, https://github.com/opensearch-project/anomaly-detection.git, https://github.com/opensearch-project/performance-analyzer.git]

Skipped components

Compatible components

Compatible components: [https://github.com/opensearch-project/geospatial.git, https://github.com/opensearch-project/security.git, https://github.com/opensearch-project/notifications.git, https://github.com/opensearch-project/index-management.git, https://github.com/opensearch-project/security-analytics.git, https://github.com/opensearch-project/job-scheduler.git, https://github.com/opensearch-project/observability.git, https://github.com/opensearch-project/alerting.git, https://github.com/opensearch-project/k-nn.git, https://github.com/opensearch-project/cross-cluster-replication.git, https://github.com/opensearch-project/asynchronous-search.git, https://github.com/opensearch-project/common-utils.git, https://github.com/opensearch-project/reporting.git, https://github.com/opensearch-project/ml-commons.git, https://github.com/opensearch-project/performance-analyzer-rca.git]

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/24483/
• CommitID: 60efbca

[codecov]

Codecov Report

Merging #9771 (60efbca) into 2.x (b3b1091) will increase coverage by 0.04%.
Report is 4 commits behind head on 2.x.
The diff coverage is 77.63%.

@@             Coverage Diff              @@
##                2.x    #9771      +/-   ##
============================================
+ Coverage     70.78%   70.82%   +0.04%     
- Complexity    58006    58132     +126     
============================================
  Files          4802     4812      +10     
  Lines        274034   274678     +644     
  Branches      40315    40367      +52     
============================================
+ Hits         193984   194551     +567     
- Misses        63435    63524      +89     
+ Partials      16615    16603      -12     

Files Changed	Coverage Δ
...rg/opensearch/crypto/kms/KmsMasterKeyProvider.java	0.00% <0.00%> (ø)
...testore/stats/TransportRemoteStoreStatsAction.java	41.02% <0.00%> (-3.42%)	⬇️
...arch/index/remote/RemoteStorePressureSettings.java	87.09% <ø> (ø)
...ain/java/org/opensearch/indices/IndicesModule.java	98.23% <ø> (-0.02%)	⬇️
...ensearch/crypto/kms/CredentialProviderFactory.java	23.07% <23.07%> (ø)
...ain/java/org/opensearch/crypto/kms/KmsService.java	59.59% <59.59%> (ø)
...main/java/org/opensearch/search/SearchService.java	71.80% <60.00%> (-0.79%)	⬇️
...ava/org/opensearch/crypto/kms/CryptoKmsPlugin.java	70.58% <70.58%> (ø)
...rg/opensearch/index/translog/RemoteFsTranslog.java	69.03% <75.86%> (-2.17%)	⬇️
...ch/index/remote/RemoteTranslogTransferTracker.java	78.91% <78.91%> (ø)
... and 21 more

... and 469 files with indirect coverage changes