Fix NOREPLICATION option for Postgres 9.1

Fixing a bug when using this module with Postgresql 9.1 that causes alter role statements to execute during every apply.
peg rspec-puppet gem version < 1

rspec-puppet >= 1.0 removed the catalogue method which breaks the param
method in `spec/spec_helper.rb`.  Hopefully, this method will be re-added
in a subsequent release.
update rspec-puppet tests to use contain_class() instead of include_class()
Merge pull request #339 from jhoblitt/rspec-puppet-fixes

Rspec puppet fixes
Merge pull request #333 from brandonwamboldt/fix-pg91

Fix NOREPLICATION option for Postgres 9.1
fix for concat error
Merge pull request #343 from flypenguin/modified

fix for concat error