Thanks to some tricks I learned from Nan Liu and Dan Bode, I was
able to figure out a way to move all of the new version-related stuff
back into the params class, and clean up some of the if/_real stuff.
Basic tests for centos6 + pg 9.2 are passing.
Nan showed me a trick that will let us keep all of that param stuff
inside of params.pp, make it a parameterized class, and still support
the ability for users to specify a custom (non-system-default) pg
version. This commit takes the first step towards that pattern by
consolidating platform.pp and params.pp. (Everything old is new again!)
This commit creates a new class called `package_source_info`,
which has some initial framework for managing the postgresql.org
yumrepo. It also serves as a container for the 'version'
variable that is needed by the 'platform' class in order to
use other versions of postgres besides the system default.
This commit does a fairly major refactor of how the spec tests
are laid out. The main goal was to make it easier to run
a subset of the tests--e.g., the ability to only run tests
on a single OS via a simple rspec command.
The test logic is now defined in some shared examples in the
`support` directory. There are now spec folders for each
distro, which contain some stubs to include the shared examples
as well as a Vagrantfile for the particular distro.
Also, the system-default postgres package tests now run
successfully against the CentOS6 VM that is defined by the
Vagrantfile.
