fixes #3906 - Support for Junos ZTP

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

fixes #3975 - add audit to classes Domain, Subnet, SmartProxy, Role, Usergroup, AuthSource, Image, Bookmark that were not audited

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

fixes #3658 - support smart proxy's chef proxy feature

fixes #3752 - move data population from migrations into seed script

WIP rails3 migration