fixes #2851 - refresh puppet classes on environment change

fixes #2788 - adding / removing puppet classes updates the change even if the form is not submitted

fixes #2837 add an interface to add repositories to kickstart, cleanup similar methods

Fixes #2576 - Add optional update of Host.ip from built request

Fixes #2839 - retry SSH authentication issues with cloud-init

Fixes #2821 - Autoload paths, PowerManager children must be in namespace in order to autoload

fixes #2693 - don't cause handle_ca error when no Puppet CA associated with host

fixes #2809 - send host subject as xpi opt to prevent ssl connect errors

fixes #2813 - move Foreman::Provision::SSH files back to /lib so it does not fail on startup for non-fog installations

fixes #2801 - remove LOWER in default_scope of models that could cause PG error