Attempts to declare default rules from VPC
Normalize all rules into one set of ingress rules

Also add some looping / etc for more common errors I saw while creating
VPCs.
Merge pull request #25 from vjanelle/cloudcaster_default_sg_rules

Attempts to declare default rules from VPC.  LGTM.  vpc timeout/retry won't work as expected, but that's overall changes that need to go into CC.