fixes #812 - new permissions model, user group role and nest support, role filters for better granularity

• Daniel Lobato <elobatocs@gmail.com>
• Joseph Magen <jmagen@redhat.com>
• Tom McKay <thomasmckay@redhat.com>
• Greg Sutcliffe <gsutclif@redhat.com>...

fixes #4015 - support oVirt using templates like images

fixes #4222 Add capability to compute resource API to retrieve cluster,network,storage info on oVirt

fixes #4125 [Openstack] - host with auto assigned IPs can't be deleted

fixes #4307 New VMware VM creation does not respect NIC type selection

fixes #3496 vSphere: add support for selectable SCSI controller

fixes #4023 - API v2 - compute resources partials should should attribute alias names and not database column names

fixes #3867 - Wrong Compute Resource type shown on overview

Fixes #3927 - Allow VMs to provision via user-data

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