postgresql_server_id is not used consistently

[igalic]

when setting postgresql_server_id through barman::postgres it's not used consistently, the exported resource will still be named $::hostname, and so barman will be expecting its wal to show up in /var/lib/barman/$hostname/incoming/ rather than in /var/lib/barman/$postgresql_server_id/incoming/

[gbroccolo]

Thanks. I modified the postgres.pp manifest and now the postgresql_server_id is consistently used in the exported resource. Its default value is $::hostname, but a different value can be set e.g. through hiera file.

I already committed the modifications in the master branch. I close this issue.