CI Failing because of constant used in neutron is not found

2018-07-02 15:28:23.056725 | ubuntu-xenial |
2018-07-02 15:28:23.056872 | ubuntu-xenial | Exception occurred:
2018-07-02 15:28:23.059671 | ubuntu-xenial | File "/home/zuul/.venv/local/lib/python2.7/site-packages/neutron/plugins/common/constants.py", line 28, in <module>
2018-07-02 15:28:23.059781 | ubuntu-xenial | 'router': constants.L3,
2018-07-02 15:28:23.059944 | ubuntu-xenial | AttributeError: 'module' object has no attribute 'L3'
2018-07-02 15:28:23.061892 | ubuntu-xenial | The full traceback has been saved in /tmp/sphinx-err-lEY7bK.log, if you want to report the

But if we check that in neutron/master

738aa4133c quantum/plugins/common/constants.py (Eugene Nikanorov 2013-05-03 18:57:00 +0400 21) EXT_TO_SERVICE_MAPPING = {
95f1e03446 neutron/plugins/common/constants.py (Boden R 2017-05-31 07:56:18 -0600 22) 'lbaas': p_const.LOADBALANCER,
95f1e03446 neutron/plugins/common/constants.py (Boden R 2017-05-31 07:56:18 -0600 23) 'lbaasv2': p_const.LOADBALANCERV2,
95f1e03446 neutron/plugins/common/constants.py (Boden R 2017-05-31 07:56:18 -0600 24) 'fwaas': p_const.FIREWALL,
95f1e03446 neutron/plugins/common/constants.py (Boden R 2017-05-31 07:56:18 -0600 25) 'vpnaas': p_const.VPN,
95f1e03446 neutron/plugins/common/constants.py (Boden R 2017-05-31 07:56:18 -0600 26) 'metering': p_const.METERING,
df6da4d6be neutron/plugins/common/constants.py (Boden R 2018-01-08 11:23:06 -0700 27) 'router': p_const.L3,
95f1e03446 neutron/plugins/common/constants.py (Boden R 2017-05-31 07:56:18 -0600 28) 'qos': p_const.QOS,
738aa4133c quantum/plugins/common/constants.py (Eugene Nikanorov 2013-05-03 18:57:00 +0400 29) }

It changed long ago.

Are we picking up an ancient version from pip for documentation?

http://logs.openstack.org/10/579210/2/check/networking-ovn-dsvm-functional/7f60674/job-output.txt.gz#_2018-07-02_15_40_07_759938