Include classifier in module name

[dpennell]

In switching from the unshaded to the shaded version of cassandra-driver-core, I spent a lot of time using this plugin. Unfortunately, the module identifier displayed does not included the classifier, so it was impossible to tell which of the two com.datastax.cassandra:cassandra-driver-core:3.2.0 entries was which.

Is it reasonable to add classifier(s) to the name that this plugin displays? If so, I'm willing to submit a PR.