Use tox 4

Changes:
- eliminate whitespace in passenv values
- removed skipsdist=True, which in tox 4 appears to prevent os-brick
  from being installed in the testenvs
- made 4.4.1 the tox minversion to catch relevant bugfixes; since
  tox is not constrained, we'll actually be using the most recent
  version of tox 4
- had to adjust the functional testenv's setenv, which wasn't
  overriding OS_TEST_PATH like it did with tox 3
- used generative section names to define the various functional
  py3 testenvs we want to support locally (namely, py38, py39,
  py310, and py311)

This patch makes tox 4 the default so that we can hopefully catch
problems locally before they block the gate.

Change-Id: I01c4d44efa64650cdb46fac34a770a7aa5881baf

0 files changed, 0 insertions, 0 deletions