Make chutney select different options depending on the tor version

Some versions of tor have bugs that chutney needs to work around, for example, #20996 (moved) requires tor versions <= 0.3.0.1-alpha to set UseMicrodescriptors 0 when setting ClientUseIPv4 0.

But we want to test newer versions without this workaround, so we need some kind of versioning feature. (Or test alternatives, where we report more than just pass or failure - but I think that's a different ticket.)