Add download link for etcd-manager-ctl, clarify restarting etcd
Add download link for etcd-manager-ctl, clarify restarting etcd

kubernetes/kops,robinpercy/kops,robinpercy/kops,justinsb/kops,justinsb/kops,justinsb/kops,kubernetes/kops,robinpercy/kops,robinpercy/kops,kubernetes/kops