The subname value in database.ini when using an embedded database varies
between the Puppet Enterprise package and the FOSS Puppet package.
Previously, the PuppetDB module could not successfully manage an
embedded database on a PE master. This commit adds an additional
parameter and utilization to account for this.
This commit does the following:
* Use the new inifile module to manage puppet.conf
* More comprehensive management of config files
* Validate database connectivity before applying puppetdb
config changes
* Validate puppetdb connectivity before applying puppet
master config changes
* Documentation