docs: def image_import(cls, image_name, url, target, **kwargs):
          """Import image from remote host to local image repository using scp.
          If remote_host not specified, it means the source file exist in local
          file system, just copy the image to image repository
          """
          source = urlparse.urlparse(url).path
          if kwargs['remote_host']:
              if '@' in kwargs['remote_host']:
                  source_path = ':'.join([kwargs['remote_host'], source])
                  command = ' '.join(['/usr/bin/scp',
                                      "-P", CONF.zvm.remotehost_sshd_port,
                                      "-o StrictHostKeyChecking=no",
                                      '-r ', source_path, target])
                  (rc, output) = zvmutils.execute(command)
                  if rc:
                      msg = ("Copying image file from remote filesystem failed"
                             " with reason: %s" % output)
                      LOG.error(msg)
                      raise exception.SDKImageOperationError(rs=10, err=output)
              else:
                  msg = ("The specified remote_host %s format invalid" %
                          kwargs['remote_host'])
                  LOG.error(msg)
                  raise exception.SDKImageOperationError(rs=11,
                                                      rh=kwargs['remote_host'])
          else:
              LOG.debug("Remote_host not specified, will copy from local")
              try:
                  shutil.copyfile(source, target)
              except Exception as err:
                  msg = ("Import image from local file system failed"
                         " with reason %s" % six.text_type(err))
                  LOG.error(msg)
                  raise exception.SDKImageOperationError(rs=12,
                                                      err=six.text_type(err))