Gerrit replication plugin is good about retrying replication if its
connectivity to the remote fails. It however thinks everything is happy
if it can connect and push even when gitea-web isn't running.
Make the whole replication system happier by stopping gitea-ssh before
other services and starting it after other services. This way gerrit
should fail to replicate until gitea is ready for it to ssh in.
Change-Id: I3440d8dd8a01a3aaf5d18c9c2ca48e7ead63856f
77fb33f5d5