docs: def role_add(self, role=None, login=None, envs=[], query='/roles/'):
          """
          `login` - Login or username of user to add to `role`
          `role` - Role to add user to
  
          Add user to role
          """
          data = {'login': self.args.login}
          juicer.utils.Log.log_debug(
                  "Add Role '%s' to '%s'", role, login)
  
          for env in self.args.envs:
              if not juicer.utils.role_exists_p(role, self.connectors[env]):
                  juicer.utils.Log.log_info("role `%s` doesn't exist in %s... skipping!",
                                            (role, env))
                  continue
              elif not juicer.utils.user_exists_p(login, self.connectors[env]):
                  juicer.utils.Log.log_info("user `%s` doesn't exist in %s... skipping!",
                                            (login, env))
              else:
                  url = "%s%s/users/" % (query, role)
                  _r = self.connectors[env].post(url, data)
                  if _r.status_code == Constants.PULP_POST_OK:
                      juicer.utils.Log.log_info("added user `%s` to role `%s` in %s",
                                                (login, role, env))
                  else:
                      _r.raise_for_status()
          return True