Addressing code review comments:
  - Set in .kitchen.yml to use CentOS 6.5
  - Update README to refer to 'Git' instead of 'Github'
  - Correct example in metadata.rb - use '.gz' extension, not '.tgz'
  - Implement higher level of logging if rs-mysql/application_database_name is not set
  - In spec/dump_import_spec.rb, check content of rendered key_file and git_ssh wrapper.