Tempest recently moved tox default
to py3 including all-plugin env.
-https://review.opendev.org/#/c/703011/
This will fail the py2 jobs which are using
all-plugin tox env. Because tox all-plugin
env var enable the sitepackages=True. Py2 jobs
install the tempest plugins on py2 and all-plugin
tox try to find the installed plugins on py3 which
cause no test to run and fail the job.
tox all-plugin has been deprecated since long and not
supposed to use for plugins who already in migrated to
separate repo in queens cycle.
Enable designate-tempest-plugin and using tox 'all' env
to fix the issue.
Change-Id: Ib1a2be90c0b3dbacc6daf52f0fc6f326ab47fc98
Closes-Bug: 1862240
36086c73df