[Retrospective] Release version 2.0.0 (GA)

[peterzhuamazon]

How to use this issue?
Please add comments to this issue, they can be small or large in scope. Honest feedback is important to improve our processes, suggestions are also welcomed but not required.

What will happen to this issue post release?
There will be a discussion(s) about how the release went and how the next release can be improved. Then this ticket will be updated with the notes of that discussion along side action items.

[bbarani]

• Discuss and establish the code freeze mechanism
  • Need to establish a code freeze mechanism #2052
• How to avoid last minute hiccups with documentation website?
• Many component release issues were not updated on time for both RC1 and GA release. Do we need a new mechanism to track the plugins during release cycle?
• Lots of confusion on 2.0 labels (RC1 vs GA tags)
  • [Retrospective] Release version 2.0.0 (RC1) #2046
• Last minute RC1 blocker due to limited (sanity) testing and missing automated tests for PA plugin
  • [Bug]: tar package location of opensearch-performance-analyzer/opensearch_security.policy performance-analyzer#213