fixes #5489 - don't generate empty search () filters on permissions migration

fixes #5540 - also clone builtin roles during migration

Fixes #5391 - Authorizer test should use testing permission

Also change order of seed so admin user can be saved and
existing Anonymous role is assigned.

Fixes #4536 - store fix_db_cache setting values correctly as YAML

fixes #812 - new permissions model, user group role and nest support, role filters for better granularity

• Daniel Lobato <elobatocs@gmail.com>
• Joseph Magen <jmagen@redhat.com>
• Tom McKay <thomasmckay@redhat.com>
• Greg Sutcliffe <gsutclif@redhat.com>...