Fix for Ubuntu 14.04.
Wrap this in a test for PE.
Merge pull request #411 from apenney/fix-1404

[WIP] (don't merge) Fix for Ubuntu 14.04.
This is already set in config.pp and so we need to pick a unique
name.
Move into the hosts loop.
Fixes to get the tests running on Ubuntu 14.04.
Merge pull request #412 from apenney/fix-tests-1404

Fix tests 1404
(MODULES-630) Deprecate postgresql::server::version

Adjusting the version is explicitly done though the postgresql::globals
class, as this affects many parts of the module. This parameter did not
function correctly on systems that did not have a default, as described
in the ticket.