Provide a way to ignore specific resources

[schnipseljagd]

Hello!

To make this more useful it would be good to have a way to ignore specific resources for a check.

E.g. the check that a security-group shouldn't allow ingress from 0.0.0.0 is generally really useful and I want it to continue to check all security groups but the one resource that allows internet traffic to my web-service it should ignore.