Integration tests

[michaelklishin]

This plugin uses a homegrown way of setting up a node with a certain config and users/permissions. There is no reason to do this.

I also don't think the suite can pass on every host/network as is but that's potentially unavoidable since IP addressees cannot be temporarily tweaked.

@dumbbell @lukebakken how do you think we should test this plugin?

[lukebakken]

[165750951]

I believe I looked into migrating this plugin to use the RabbitMQ CT helpers but didn't get far. That seems like a good option, though.