Now that all the problems of running a different version of python in
slapos-node and within the software and now that slapos-node always run
on python3, we no longer need to have two separate test softwares and
two separate suites for python2 and python3 - we have one test suite
for all our softwares, regardless of the python version used by these
softwares and this test suite use python3 to run the tests code and to
run slapos-node