Document that admin mutations should be POST

[jmarantz]

Signed-off-by: Joshua Marantz [email protected]

envoyproxy/envoy#2971 adds warning-checks that mutations should be POSTed. This documents that status. In a future PR, mutations will fail if they are not POSTs.

See envoyproxy/envoy#2763 for more detail.

[mattklein123]

LGTM. Can you fix DCO?

[jmarantz]

I can try but it seems I am not good at DCO.

[jmarantz]

Woo-hoo! Re-learned how to resolve DCO:

  git log --oneline|head
  git reset --soft <HASH OF MY COMMIT>
  git commit --amend
  git push --no-verify --force