Fix bug in /instance/appversions
Show VPC on security group list, because when we hit a limit in a VPC it helps to be able to filter the list on that VPC ID
ASGARD-629 - Security group should display dependencies

This way it's a lot easier to find most of the things that need to get deleted before you're allowed to delete the security group.
Fix security controller unit tests
Merge pull request #362 from joesondow/ASGARD-629-Security-group-dependencies

ASGARD-629 - Security group should display dependencies