fixes #18476 - users have ssh keys

Fixes #18767 - keep cloning info

Add pxe_loader to host REST

Add the field `pxe_loader` to the GET part of the hosts/
It is possible to set or update (POST, UPDATE), but not to read it

fixes #18574 - add ip6 address to the REST api results

fixes #13618 - cache expensive vmware api calls

Fixes #18280 - Adds compute resource provider name

Makes the API return the provider name of the compute resource

Refs #15779 - make background processing unavailable for now (#4217)

The original PR got vetted in the packaging phase and including
foreman-task as dependency of Foreman was refused. We need to rethink
our approach for getting the foreman-tasks functionality available...

Refs #17653 - add show_hidden to apidoc

Fixes #6502 - List ignored classes and environments on import

When importing environments and classes from puppet, ignored
environments and classes defined in ignored_environments.yml
aren't aparent.

This will add them to the list to import as ignored and...

Fixes #17653 - Allow all parameters api to unhide values