* Move Python environment values into `utils/environment.python.sh`
* Source the `utils/environment.python.sh` before running Python
scripts.
* Add `DeprecationWarning` suppression for `distutils`
Now the output of `make test-py` returns `30 passed in N.NNs` instead of
the previous `30 passed, 1 warnings in N.NNs`
Signed-off-by: Tim 'mithro' Ansell <me@mith.ro>