fixes #1804 - find hosts through nested hostgroups on puppet class search
refs #2189 - update host group parameter search tests
Fixes #4927 - Extend foreman-debug to look for extensions provided by plugins.

This assumes a directory called /usr/share/foreman/script/foreman-debug.d.
Any *.sh file in there is sourced. The expectation is that plugins would put
files into this locations and can add files or commands as necessary
fixes #4800 SLES special handling in facts parser
fixes #4731 - Rails 3.2.8 causing _pkey constraint errors
Fixes #4851: a SmartProxy.with_features scope replaces feature-specific scopes generated during class loading
fixes #4659 - added foreman-tail tool
fixes #4691 - add search for hosts' managed status
fixes #4673 - make default sort order descending on count columns