neutron_tempest_plugin.scenario.test_floatingip.FloatingIPQosTest.test_qos fails on an environment that qos service is not configured.

Issue

• neutron_tempest_plugin.scenario.test_floatingip.FloatingIPQosTest.test_qos fails on an environment that qos service is not configured.

{0} neutron_tempest_plugin.scenario.test_floatingip.FloatingIPQosTest.test_qos [177.059550s] ... FAILED

Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "/usr/lib/python2.7/site-packages/neutron_tempest_plugin/scenario/test_floatingip.py", line 268, in test_qos
        sleep=1)
      File "/usr/lib/python2.7/site-packages/neutron_tempest_plugin/common/utils.py", line 73, in wait_until_true
        raise WaitTimeout("Timed out after %d seconds" % timeout)
    neutron_tempest_plugin.common.utils.WaitTimeout: Timed out after 120 seconds