zuul: migrate and clean the tempest native jobs

Define here the barbican tempest plugin which rely on
barbican-tempest-plugin, following the common patterns:

- follow the rules for naming (repository name as prefix,
  remove some redundant details);
- define branch-specific jobs from the most basic job
  to catch regressions against older branches;
- remove barbican-simple-crypto-devstack-tempest-py35,
  long gone, from the experimental queue.

Change-Id: I106addbe99b1bd4ed72ab07aba16031067503483
1 file changed