'Return a list of all roles.'

@decorators.idempotent_id('75d9593f-50b7-4fcf-bd64-e3fb4a278e23')
def test_list_roles(self):

    body = self.roles_client.list_roles()['roles']
    found = [role for role in body if (role in self.roles)]
    self.assertNotEmpty(found)
    self.assertEqual(len(found), len(self.roles))
