Remove deprecation warning from rspec

- Fix rightscale_upload git location in Gemfile
- Fix rspec line in Strainerfile
- Rename spec files so they are found by rspec
- Fix deprecated to_not raise_error usage
Merge pull request #3 from rightscale-cookbooks/white_14_01_acu134962_remove_deprecation_warning_from_rspec

Remove Deprecation warning from rspec