Comment 2 for bug 1838438

Added the Juju openstack-dashboard charm.

The help test for the theme options needs some clarity, currently default-theme is "this setting is mutually exclusive to ubuntu-theme", ubuntu-theme doesn't mention custom theme or default-theme, and custom-theme says "this setting is mutually exclustive to ubuntu-theme and default-theme".

How should we set a dashboard to use the custom theme and not have options for other themes?