Fix gerrit database backups

The gerrit database is now remote, or at least we have a hostname
for it, so we should use the backup_remote class. Also, we don't
make the dbbackups files anymore, so stop trying to compress them.

Change-Id: Iddbaaef9b9fd089f074abeeb988f7cd052c80d25

modules/gerrit/manifests/cron.pp

@@ -23,10 +23,7 @@ class gerrit::cron(
   }
 
   cron { 'removedbdumps':
+    ensure      => 'absent',
     user        => 'gerrit2',
-    hour        => '5',
-    minute      => '1',
-    command     => 'find /home/gerrit2/dbupdates/ -name "*.sql.gz" -mtime +30 -exec rm -f {} \;',
-    environment => 'PATH=/usr/bin:/bin:/usr/sbin:/sbin',
   }
 }

modules/openstack_project/manifests/gerrit.pp

@@ -191,7 +191,10 @@ class openstack_project::gerrit (
     require                             => Class[openstack_project::server],
   }
 
-  mysql_backup::backup { 'gerrit':
+  mysql_backup::backup_remote { 'gerrit':
+    database_host     => $mysql_host,
+    database_user     => 'gerrit2',
+    database_password => $mysql_password,
     require           => Class['::gerrit'],
   }