fixes #21657 - remove facets when host is removed

Fixes #23081 - Fix Style/SafeNavigation cop

Fixes #15409 - Separated puppet facts from core

Fixes #20957 - Replace alias_method_chain with Module prepend

Deprecated in Rails 5.0 and will be removed in 5.1. Some instances of
classes overwriting existing methods can be handled with `super`, other
concerns or modules are changed to use prepend instead of include....

Fixes #19374 - added check to fix double facet registration

Fixes #16987 - Added ability to apply facet attributes

Fixes #17439 - Moved facet base to a concern

If the plugin that wants to create a new facet doesn't want to
take the inheritance slot (for example if it already has some
base class), it can `include` the new concern.

fixes #3917 - replace protected_attrs with strong parameters

Filtering of attributes has moved from the protected_attributes gem to
strong parameters in controller concerns, to be in line with current
Rails recommendations.

Concerns are shared between UI and both API controllers and list the...

Fixes #15011 - don't expect the facet tables in migration

The problem was the
db/migrate/20140910153654_move_host_nics_to_interfaces.rb tries to
read the attributes that get extended by the facets, but the facets
table might not be ready yet.

To avoid unnecessary checks in production where the host.attributes...

Fixes #14166 - Host facet attributes handling updated

Basically added code to include handling of host facets in hosts where
no form attributes belonging to that facet are set.