Add tempest-full-py3 job to zuul file
Add tempest-full-py3 job to zuul file

This change adds the tempest-full-py3 job definition to the zuul
file in order to define irrelevant-files. This allows us to skip
running the job when non-tempest impactng files are changed.[0]

[0] https://review.openstack.org/#/c/615749/

Change-Id: I9d8b2f3f7cd325af4c74543031b5face0876cd51

mahak/keystone,openstack/keystone,openstack/keystone,openstack/keystone,mahak/keystone,mahak/keystone