WIP
WIP - adding support for an 'included' config file
RSpec tests were fixed to work properly with included postgresql_puppet_extras.conf
Improved test result matching for the advanced PGS configuration test.
Added test of the included postgresql configuration file
Added info about the advanced configuration file
Merge pull request #105 from kbrezina/feature/master/adding-include-to-pg-conf

Support for included configuration file