Break dependency cycle in osm

Error was:
(Augeas[hba_create-replication@-v4] => Exec[pgreload] =>
Class[Postgresql::Server] => File[/etc/postgresql/9.1/main/master.conf]
=> Class[Postgresql::Master] => Postgresql::User[replication@-v4] =>
Augeas[hba_create-replication@-v4])

Fixing it by removing a dependency

Change-Id: I48dce7079ae5231b28ae2298af0e19c67dd08665