Sort security_group ip_permissions

 - In CI, a new failure occurred as a result of code
   introduced in the previous commit to order security
   group ingress rules as specified in a manifest, in the
   same manner as those returned as ip_permissions by AWS.
   It would appear that Rubys sorting algorithm doesn't
   necessarily match the behavior of AWS.  To ensure that
   the two sets are sorted identically, perform the same
   sort operation on the AWS returned rules.

   By normalizing the sort operation, the code is more
   resilient to AWS ordering, and generally future-proof
   should that behavior change on the AWS side.
Allow changing ingress rules after security group creation

* Updated the acceptance test to check both that rules are added
* and that rules are deleted
Merge branch 'allow-changing-ingress-rules'

* allow-changing-ingress-rules:
  Allow changing ingress rules after security group creation
  Sort security_group ip_permissions

  closes #33