Prior to this commit, the deprecated `manage_redhat_firewall` param
was not actually backward compatible because there were several
cases where we couldn't tell the difference between the user
explicitly specifying `false` for that parameter as opposed to
not specifying it at all. This commit is a bit ugly because it
sets some defaults to `undef` in order to allow us to tell the
difference between the two cases, but it should resolve backwards
compatibility issues.
Prior to this commit the module did not provide a way to set a bind address for the HTTP port. This
commit allows users to not only bind to an address and port other than localhost and 8080, but it also
opens the firewall if explicitly requested.
Prior to this commit, if you allowed the puppetdb module
to manage postgres for you, it would always try to manage
the firewall for the postgres port on redhat systems.
This commit exposes that as a parameter in a few more
spots, and passes it through to the postgres module.
