fixes #4250 - API v2 - add compute profiles

fixes #2785 - host model clone method also copies relationships using deep_cloneable gem

fixes #5450 - add realm to params for 1.4-compatible use in templates

fixes #5444 - add param_false? host method and allow in templates

fixes #5246 - remove second host/class lookup impl so config groups are included in ENC output

fixes #4204 - add config groups feature - assign multiple config groups to a host or hostgroup

fixes #5053 - minor bug fixes to realm integration

fixes #4381: dns records are being update after changes to host when dhcp is also present

Fixes #4976 - ensure the process is really running inside a rake task

fixes #1809 - foreman realm integration