[1.15.x] peering: ensure that merged central configs of peered upstreams for partitioned downstreams work#17181

rboyer merged 2 commits intorelease/1.15.xhashicorp/consul:release/1.15.xfrom

1-15-fix-peering-merge-central-confighashicorp/consul:1-15-fix-peering-merge-central-configCopy head branch name to clipboard