There are several problems with the dependency excludes DSL. I'm talking about...

configurations {
compile ("foo:bar:1.0")

}

One problem is that `exclude [:]` is effectively `exclude module: "", group: ""`. This gets worse when people get one of the keys wrong, `exclude name: "baz"`, as this will just silently exclude everything.

Another is that `module` is probably the wrong key to be looking for, it should probably be `name`.

We should also fail early if a key is used that we don't support, and internally this should use the notation parser mechanism.