Setup certmonger privileges

- Install rpms necessary for certmonger.
- Tell database to use passwords when using ssl.
  (removing code that leverages client side certificates)
- setup privileges so certmonger can write to the certificate directories

https://bugzilla.redhat.com/show_bug.cgi?id=1130658

/cc/@jrafanie
we no longer do user certs without passwords, so it does not make sense.
If you note, the reference to `sslmap` is also removed from `pg_hba.conf`