So much has changed since I originally got the RPC tests working many years ago,
most notably modern Linux distros don't even have a way to install python2 via
packages, you have to install from source. Continuing with python2 does not seem
like a good idea, so we begin migrating thigns to Python 3.
Currently running ./test.sh will successfully spin up a test chain but then
the test suite crashes when attempting to send an RPC request, which looks
to be caused by the test suite internals still expecting python2.
fb062d2849