This is a fix for [COOK-1508]

Updated the attributes and the server recipes to no longer perform the '/sbin/service postgresql initdb' on openSuSE 11.4, since the current default version of postgresql on that platform does not have support for initdb.

* Remove the pg gem resource, this will be moved to a separate recipe.
* Switch the not_if for postgres user password setting to a shell
  command so the pg gem is not required.
* Install client packages during normal execution phase instead of the
  compile phase as they are no longer required before installing the gem

* Add attributes to node['postgresql'] for client and server package
  installation (client_packages and server_packages respectively)
* Remove convoluted package name selection logic from client and
  server_{redhat,debian} recipes
* Specify default values based on platform version from recipes

Conflicts:
	attributes/default.rb
	metadata.rb
	recipes/client.rb
	recipes/server.rb
	recipes/server_debian.rb
	recipes/server_redhat.rb
	templates/default/debian.postgresql.conf.erb
	templates/default/redhat.postgresql.conf.erb

Changed the package name for opensuse to be postgresql-devel rather than postgresql-client.

Also added suse to the rhea and fedora list of configuration values.