Refs #18576 - update OpenSUSE mirror url

Fixes #16982 - Scope properly when no taxonomies are set

The default scope for hosts and other objects did not restrict
properly by taxonomies. An user without organizations or
locations, could do anything it's permissions allow to.
The list of hosts was unrestricted and showed hosts in...

Fixes #16204 - Singularize ExternalUsergroups for permissions

fixes #18481 - host index page loads faster

Fixes #18440 - removes dead code and obsolete permission

Fixes #18321 - added migration for builtin roles

fixes #13618 - cache expensive vmware api calls

fixes #17545 - adds UI notification support

- Initial data model for notification support, based on manageiq design.
- addes notification JSON endpoints.

fixes #18130 - add autoincrement for bigint id columns

fixes #18136 - add indices for reports type column