Remove COMPRESSOR variable from CompressorFactory

[willyborankin]

Description

The aim of this PR is to remove a deprecated COMPRESSOR variable from
CompressorFactory and use DEFLATE_COMPRESSOR instead.

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
• Commit changes are listed out in CHANGELOG.md file (See: Changelog)

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.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.backpressure.SearchBackpressureIT.testSearchShardTaskCancellationWithHighCpu
      1 org.opensearch.search.SearchWeightedRoutingIT.testSearchAggregationWithNetworkDisruption_FailOpenEnabled

• URL: https://build.ci.opensearch.org/job/gradle-check/16803/
• CommitID: a5560dd
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[codecov]

Codecov Report

Merging #7907 (1b833b1) into main (584617e) will increase coverage by 0.12%.
The diff coverage is 85.71%.

@@             Coverage Diff              @@
##               main    #7907      +/-   ##
============================================
+ Coverage     70.87%   70.99%   +0.12%     
- Complexity    56504    56631     +127     
============================================
  Files          4719     4719              
  Lines        267408   267409       +1     
  Branches      39196    39196              
============================================
+ Hits         189521   189847     +326     
+ Misses        61861    61551     -310     
+ Partials      16026    16011      -15     

Impacted Files	Coverage Δ
...java/org/opensearch/transport/TransportLogger.java	40.69% <0.00%> (ø)
...rg/opensearch/transport/TransportDecompressor.java	75.32% <75.00%> (+0.32%)	⬆️
...ch/cluster/coordination/CompressedStreamUtils.java	80.00% <100.00%> (ø)
...opensearch/common/compress/CompressedXContent.java	85.93% <100.00%> (ø)
.../opensearch/common/compress/CompressorFactory.java	57.14% <100.00%> (ø)
...ch/repositories/blobstore/BlobStoreRepository.java	65.01% <100.00%> (+0.23%)	⬆️
...earch/transport/CompressibleBytesOutputStream.java	81.81% <100.00%> (ø)

... and 469 files with indirect coverage changes

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.cluster.routing.allocation.decider.DiskThresholdDeciderIT.testIndexCreateBlockIsRemovedWhenAnyNodesNotExceedHighWatermarkWithAutoReleaseEnabled

• URL: https://build.ci.opensearch.org/job/gradle-check/16806/
• CommitID: 47bf6a5
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[dbwiddis]

Change looks good at first glance, but I'm missing the context on why we are doing this. Is there an issue discussing the benefit of this change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/17077/
• CommitID: 45e9cf1

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/17284/
• CommitID: 1b8d6f5
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/17285/
• CommitID: ba3ceae
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: UNSTABLE ❕
• TEST FAILURES:

      1 org.opensearch.search.backpressure.SearchBackpressureIT.testSearchTaskCancellationWithHighCpu

• URL: https://build.ci.opensearch.org/job/gradle-check/17286/
• CommitID: 86f548f
  Please review all flaky tests that succeeded after retry and create an issue if one does not already exist to track the flaky failure.

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: FAILURE ❌
• URL: https://build.ci.opensearch.org/job/gradle-check/17287/
• CommitID: 1b833b1
  Please examine the workflow log, locate, and copy-paste the failure(s) below, then iterate to green.
  Is the failure a flaky test unrelated to your change?

[reta]

• URL: https://build.ci.opensearch.org/job/gradle-check/17287/

#3603
#7751

[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/17473/
• CommitID: 1b833b1

[opensearch-trigger-bot]

The backport to 2.x failed:

The process '/usr/bin/git' failed with exit code 128

To backport manually, run these commands in your terminal:

# Fetch latest updates from GitHub
git fetch
# Create a new working tree
git worktree add ../.worktrees/backport-2.x 2.x
# Navigate to the new working tree
pushd ../.worktrees/backport-2.x
# Create a new branch
git switch --create backport/backport-7907-to-2.x
# Cherry-pick the merged commit of this pull request and resolve the conflicts
git cherry-pick -x --mainline 1 8c7493203bbedc96efb88581a80198d8d26771db
# Push it to GitHub
git push --set-upstream origin backport/backport-7907-to-2.x
# Go back to the original working tree
popd
# Delete the working tree
git worktree remove ../.worktrees/backport-2.x

Then, create a pull request where the base branch is 2.x and the compare/head branch is backport/backport-7907-to-2.x.

[dblock]

Will need a manual backport @willyborankin if you want it in 2.x.