New packages python-watcherclient and wathcer-dashboard are required in RDO as required for watcher service completeness.

Note that watcher service, puppet-watcher and watcher-tempest-plugin are included and included in weirdo puppet scenario004 but the client and horizon dashboard are not.

Upstream repos:

• https://github.com/openstack/python-watcherclient
• https://github.com/openstack/watcher-dashboard

I plan to backport it up to antelope