Add option to enable default pam config for VAS

Supported on EL 5 and EL 6
Fix rake test
Add ability to specify an array to pam::limits::fragment

This is needed to ensure that you can have custom data without having to
create files and modify the code.
Automatically include limits fragments via create_resources()
Merge remote-tracking branch 'jwennerberg/ensure_vas' into add_nonfile_fragments
fix typo in define name
Add example of hiera usage to README
Merge pull request #38 from ghoneycutt/add_nonfile_fragments

Add nonfile fragments