Backport of Revert "ci: remove test splitting for compatibility tests" into release/1.15.x#17265

hc-github-team-consul-core merged 3 commits intorelease/1.15.xhashicorp/consul:release/1.15.xfrom

backport/revert-17166-jm/remove-compat-test-splitting/exactly-refined-katydidhashicorp/consul:backport/revert-17166-jm/remove-compat-test-splitting/exactly-refined-katydidCopy head branch name to clipboard