We only use it in the redis driver. Switch to using
packaging.version.Version, which is good enough for the redis-py test
suite also [1].
[1] https://github.com/redis/redis-py/blob/07fc339b4a/tests/conftest.py#L199-L208
Change-Id: I42fddfde153c3293099765bf76fe07a5064b3213
Signed-off-by: Stephen Finucane <stephenfin@redhat.com>