Remove and actualize some TODOes
Remove and actualize some TODOes

1 type of min and max count is now checked by validator, therefore the
check in certain api level isn't needed
2 actualize TODO about security group
3 fix style

Change-Id: I8cae95a44c7fc2e6e4b9fbc183806f09b9e9df0f

stackforge/ec2-api,openstack/ec2-api,hayderimran7/ec2-api,hayderimran7/ec2-api,openstack/ec2-api,stackforge/ec2-api