refs #4521 - Openstack Compute Resource: Boot from Volume on new Host

(cherry picked from commit 3f56eab265fdec913f988a119d78771d345c5428)

Refs #3809 - Remove cops for empty lines

fixes #3902 - [Openstack] allow selection of internal networks

This patch allows the user to select the internal network when deploying
a new instance in openstack.

In Grizlly, this was done automaticilly, with a nasty side effect, that
all internal networks would get assigned (didnt see that as i had only...

fixes #3980 - Compute profiles not rendering Openstack attributes correctly

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

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