def default_cloud_name
      cloud_file_path = RightScale::AgentConfig.cloud_file_path
      value = File.read(cloud_file_path).strip if File.file?(cloud_file_path)
      value.to_s.empty? ? UNKNOWN_CLOUD_NAME : value
    end
def default_cloud_name
      cloud_file_path = RightScale::AgentConfig.cloud_file_path
      value = File.read(cloud_file_path).strip if File.file?(cloud_file_path)
      value.to_s.empty? ? UNKNOWN_CLOUD_NAME : value
    end
Getter for the default cloud name. This currently relies on a
 'cloud file' which must be present in an expected RightScale location.

 === Return
 result(String):: content of the 'cloud file' or UNKNOWN_CLOUD_NAME