Add postgresql-server
Add postgresql-server

Prior to this commit, the `puppetdb::master::config` class would
fail as the 'base' fact `postgres_default_version` fact relys on the command
`yum info` to be ran ,this will fail if base is not
enabled.

https://github.com/puppetlabs/puppet-postgresql/blob/master/lib/facter/postgres_default_version.rb#L11

joshsamuelson/pltraining-localrepo,samuelson/pltraining-localrepo,puppetlabs/pltraining-localrepo,puppetlabs/pltraining-localrepo