Backport of Default ProxyType for builtin extensions into release/1.16.x#17667

hc-github-team-consul-core merged 2 commits intorelease/1.16.xhashicorp/consul:release/1.16.xfrom

backport/cthain/default-ext-proxy-type/lively-enabling-treefroghashicorp/consul:backport/cthain/default-ext-proxy-type/lively-enabling-treefrogCopy head branch name to clipboard