fixes #3178 - add feature for compute profiles for hostgroups and hosts

fixes #3698 - add image_id alias to server resource as form uses it

fixes #1719 - Add support for GCE

fixes #1871, #1879 - add VPC support to EC2 compute resource

Based on patch from Romain Vrignaud <romain@yakaz.com>

fixes #2891 Openstack power control operations support

Compute resource helper Strings should be possible to translate

Compute resource permission to pause vms

Tests for Openstack VM pausing/resuming

VMs UI shows only available actions

I18n string issues. Vm power state cannot be properly translated yet...

fixes #2411 - move lib/audit_extensions lib/fog_extensions lib/foreman to models/concerns

fixes #2739 - add ActiveSupport::Concern syntax to mixins