Add IAMInstanceProfile support to launch configs
Improve support for VPC Security Groups in RDS

* Ensures create_db_instance passes VPC args onwards
* Bumps API version so that VPC results are returned in describe calls
Merge branch 'as_config_iam_instance_profile' of github.com:jtopper/fog into as_config_iam_instance_profile

Conflicts:
	lib/fog/aws/parsers/auto_scaling/describe_launch_configurations.rb
Remove duplication
Merge pull request #2391 from jtopper/as_config_iam_instance_profile

Add IAMInstanceProfile support to launch configs
[aws|dns] Don't set mock changes to INSYNC immediately, only after some timeout
Merge pull request #2400 from maestrodev/aws-dns-status

[aws|dns] Don't set mock changes to INSYNC immediately, only after some timeout