Fixes #12201 - Made parent associations finder less dependent on association name

Fixes #12328 - host STI loads subclasses

fixes #4151 - enable reports STI

Permits subclassing of ReportImporter and Report to import and store
new types of reports associated to hosts.

Fixes #12132 - [API] Host all parameters should include host parameters

Fixes #10988 - Remove 1.11 deprecations

Fixes #12011 - Replace .includes(table).where(table) by .eager_load

On Rails 3, .includes(:users).where("users.name = 'daniel'") works because
Rails would be smart enough to figure out the where query uses the includes
table. In this case it'd internally resolve it to eager_load to use the table...

Refs #10409 - Rails 4 compatible changes with Rails 3

This includes some changes that can be applied to Rails 3 without
any issue and don't follow any particular pattern/deprecation, In
general these are minor things we have to change. Other PRs with
retrocompatible changes that aim to fix particular deprecations...

Refs #12067 - Delegated method to_ip_address should be public

Missed this one in 3b75c0a74e4e46d53d2203d05a0fffac386ded1f . It fails
on Rails 4 when called from Nic::Managed as it's delegated but not public.

Fixes #10993 - handle no interfaces in facts correctly

fixes #11885 - exclude lookup_value_matcher on clone

Keeping lookup_value_matcher populated during a host or
hostgroup#clone caused Rails to believe the cloned object was still
associated to the existing LookupValue associated to the original
object, and it would destroy it during clone.