Write a script that tests chutney's major features on the specified network and tor version

We'd like to test each major chutney feature on each network (or each feature on at least one network).

To make this testing easier, we should have a script that tests each major feature. It should accept a network argument, and default to a network that covers most of tor's features.

We might also want to allow extra arguments to test-network.sh to be passed through to the script.