Jenkinsfiles to have an input BUILD_BRANCH.

[prudhvigodithi]

Is your feature request related to a problem? Please describe

Part of #2549

Jenkinsfiles to have an input BUILD_BRANCH. Once the branching strategy in place, Jenkinsfiles should be able to checkout the right branch as per release to make sure release specific code is executed.

Describe the solution you'd like

• Add a new input BUILD_BRANCH.
• Add a new stage that checks out the build repo with specific BUILD_BRANCH.
• Stash the repo files.
• Unstash in every required stage to make sure the stage uses the right code specific to BUILD_BRANCH

Describe alternatives you've considered

No response

Additional context

More useful info on stash and unstash https://www.youtube.com/watch?v=0GQZzLlnUws

[prudhvigodithi]

PR converted to draft #2559, until a solution is finalized that satisfies the version/branching requirement with OpenSearch and OpenSearch Dashboards version being offset
More details on comments: #2549

[bbarani]

Can we also close this issue until we finalize a solution @prudhvigodithi

[prudhvigodithi]

Hey @bbarani yes we can close this. I'm going to close this as not planned, related META issue #2549, which also needs to be updated with new acceptance criteria.