Backport of Add docs for usage endpoint and command into release/1.15.x#16382

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

backport/operator-usage-docs/violently-known-clamhashicorp/consul:backport/operator-usage-docs/violently-known-clamCopy head branch name to clipboard