Fix version check for 2.x release for awareness attribute decommission

[imRishN]

Signed-off-by: Rishab Nahata rnnahata@amazon.com

Description

Fixes the version check for decommission metadata and exceptions related to decommission
Backport PR for decommission - #4970

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
• 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.
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[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/6193/
• CommitID: 8d7af7e

[codecov-commenter]

Codecov Report

Merging #5034 (8206ade) into main (fab4336) will decrease coverage by 0.00%.
The diff coverage is 64.28%.

@@             Coverage Diff              @@
##               main    #5034      +/-   ##
============================================
- Coverage     70.84%   70.83%   -0.01%     
- Complexity    57867    57937      +70     
============================================
  Files          4692     4695       +3     
  Lines        276650   276952     +302     
  Branches      40155    40170      +15     
============================================
+ Hits         196002   196189     +187     
- Misses        64500    64690     +190     
+ Partials      16148    16073      -75     

Impacted Files	Coverage Δ
...java/org/opensearch/upgrade/ValidateInputTask.java	84.61% <0.00%> (ø)
.../src/main/java/org/opensearch/LegacyESVersion.java	59.34% <ø> (-2.37%)	⬇️
...ensearch/action/search/SearchTransportService.java	83.75% <ø> (-3.25%)	⬇️
...va/org/opensearch/action/update/UpdateRequest.java	45.48% <0.00%> (+1.03%)	⬆️
.../cluster/metadata/IndexNameExpressionResolver.java	83.79% <ø> (-0.03%)	⬇️
...va/org/opensearch/cluster/node/DiscoveryNodes.java	90.41% <ø> (+0.51%)	⬆️
.../opensearch/index/stats/IndexingPressureStats.java	33.78% <0.00%> (+1.31%)	⬆️
...rc/main/java/org/opensearch/monitor/fs/FsInfo.java	75.00% <ø> (+1.92%)	⬆️
...ggregations/metrics/TopHitsAggregationBuilder.java	64.41% <0.00%> (-0.19%)	⬇️
.../java/org/opensearch/test/InternalTestCluster.java	60.76% <7.14%> (-0.88%)	⬇️
... and 514 more

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[github-actions]

Gradle Check (Jenkins) Run Completed with:

• RESULT: SUCCESS ✅
• URL: https://build.ci.opensearch.org/job/gradle-check/6194/
• CommitID: 8206ade