"admin_user", "admin_tenant_name", "admin_password" and "auth_uri"
are options which are imported from the "keystone_authtoken" group,
itself being part of the "keystonemiddleware" 3rd-party library.
The problem is that these options are imported at 2 different
locations in the codebase:
- watcher/applier/manager.py
- watcher/common/keystone.py
Removed one from the applier.
Change-Id: Ie7075883018ec69f6a4e8190f50a9ea949ab9745
Closes-Bug: #1526259