Refs #1556 - Remove puppet docroot setting from db and tests

Fixes #17483 - async task creation returns 202

Includes task link in response

Fixes #15779 - make background processing available

Fixes #16739 - unify parameters permissions

Fixes #17403 - enable exporting of templates

Fixes #17238 - Validates lookup value match exists in key path

Fixes #16646 - Add ability to plugins to modify index scope

Fixes #16548 - Changing user own passwd require current passwd

Fixes #17104 - ignore resource via API

Fixes #6492 - ipmi_boot permission renamed to ipmi_boot_hosts

Authorizer expects permission names to follow a convention
'action'_'controller'. However this permission was not following it, and
this prevented the permission from being applied properly.

Before this fix, only admins could call ipmi_boot. I've also added a...