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

fixes #3896 Retrieve OVirt CA certificate via same URL scheme as API URL by disabling SSL verification

fixes #2374 - added allocation option to libvirt VM

fixes #3832 - foreman supplies user for GCE images, fog expects username

fixes #3822 - updated Rackspace datacenter list

fixes #3138 - move CR library loading into initializers, only show available providers

fixes #3249 - change regex syntax from start/end of line to start/end of string

fixes #2741 - rails 3 syntax

fixes #3134 - disable vSphere fields on host edit, fix clone behavior

Fixes #3177: a 'G' suffix is automatically appended to libvirt volume capacity value if none was specified