Backport of upgrade test: peering with resolver and failover into release/1.15.x#16440

hc-github-team-consul-core merged 1 commit intorelease/1.15.xhashicorp/consul:release/1.15.xfrom

backport/NET-2232-peering-upgrade-test-cfg-resolver-peering-failover/arguably-sought-bulldoghashicorp/consul:backport/NET-2232-peering-upgrade-test-cfg-resolver-peering-failover/arguably-sought-bulldogCopy head branch name to clipboard