* Update plugins/replication from branch 'master'
- Removed the recommendation for ssh
As discussed many times during the Gerrit conferences and hackathons,
Git/SSH replication on Gerrit isn't stable enough due to the JSch
client stack. Removing the recommendation from the documentation
may help in choosing alternative methods.
Change-Id: I3c8646135999d6cbb99b58d83d42655d25ea23e9