Moved package repo config into vmwaretools::repo.

This pattern separates the YUM repo configuration from the main class
and allows it to be overridden and tested a little bit easier.
Clean up vmwaretools_ntp_spec.rb.
Removed last references to open-vm-tools.
Refactor vmwaretools_spec.rb.

Updated Suse $package_name_5x to include vmware-tools-esx-kmods-default
similar to the RedHat entry.
Renamed vmwaretools_spec.rb.
Cleaned out unused code from Rspec tests.