feat: add the mirror-agent binary for EtcdMirror (config, TLS reload, statusz/metrics, kind e2e)#412

xrl wants to merge 10 commits into

etcd-io:mainetcd-io/etcd-operator:mainfrom

xrl:pr/etcdmirror-mirror-agent-binxrl/etcd-operator:pr/etcdmirror-mirror-agent-binCopy head branch name to clipboard