Add "tempest" tag in Launchpad
Add "tempest" tag in Launchpad

With all the jobs running tempest now, it's good to have a way to track
down all the tempest issues easily on Launchpad.

Change-Id: I885df34d5768f65776df7d6c722eebbb92718a0e

openstack/tripleo-specs,openstack/tripleo-specs