fix(clustering): CP should support both v1 and v2

[StarlightIbuki]

Summary

Let's fix the rest of the tests in another PR.

Checklist

• The Pull Request has tests
• A changelog file has been created under changelog/unreleased/kong or skip-changelog label added on PR if changelog is unnecessary. README.md
• There is a user-facing docs PR against https://github.com/Kong/docs.konghq.com - PUT DOCS PR HERE

Issue reference

Fix KAG-5551

[team-gateway-bot]

Cherry-pick failed for master, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally.

git remote add upstream https://github.com/kong/kong-ee
git fetch upstream master
git worktree add -d .worktree/cherry-pick-13805-to-master-to-upstream upstream/master
cd .worktree/cherry-pick-13805-to-master-to-upstream
git checkout -b cherry-pick-13805-to-master-to-upstream
ancref=$(git merge-base 0072d7b770af30d6f3373ed6e6d39955b1c78090 5791783c811a692233957866b0753dd8d088378a)
git cherry-pick -x $ancref..5791783c811a692233957866b0753dd8d088378a

[StarlightIbuki]

Cherry-pick failed for master, because it was unable to cherry-pick the commit(s).

Please cherry-pick the changes locally.

git remote add upstream https://github.com/kong/kong-ee
git fetch upstream master
git worktree add -d .worktree/cherry-pick-13805-to-master-to-upstream upstream/master
cd .worktree/cherry-pick-13805-to-master-to-upstream
git checkout -b cherry-pick-13805-to-master-to-upstream
ancref=$(git merge-base 0072d7b770af30d6f3373ed6e6d39955b1c78090 5791783c811a692233957866b0753dd8d088378a)
git cherry-pick -x $ancref..5791783c811a692233957866b0753dd8d088378a

We will cherry-pick after a larger cherry-pick is done: https://github.com/Kong/kong-ee/pull/10460