---
bugfixes:
  - ec2_group - There can be multiple security groups with the same name in
    different VPCs. Prior to 2.6 if a target group name was provided, the group
    matching the name and VPC had highest precedence. Restore this behavior by
    updated the dictionary with the groups matching the VPC last.
  - ec2_group - support EC2-Classic by not assuming security groups have VPCs.