def image i
      @logger.debug "OpenStack: Looking up image '#{i}'"
      @compute_client.images.find { |x| x.name == i } || raise("Couldn't find image: #{i}")
    end
def image i
      @logger.debug "OpenStack: Looking up image '#{i}'"
      @compute_client.images.find { |x| x.name == i } || raise("Couldn't find image: #{i}")
    end
Provided an image name return the OpenStack id for that image
@param [String] i The image name
@return [String] Openstack id for provided image name