Following stestr's example where arguments such as --blacklist-file,
--black-regex and --whitelist-file are deprecated since its
3.1.0 release, let's do the change here as well in order to
get tempest consumers some time for the transition.
This change deprecates the following arguments and replaces them
by new ones which are functionally equivavelnt:
* --black-regex is replaced by --exclude-regex
* --blacklist-file is replaced by --exclude-list
* --whitelist-file is replaced by --include-list
For now, Tempest will accept both (new and old) arguments to make
the transition smoother for all consumers.
The patch also bumps min version of tox to 3.18.0 in order to
replace tox's whitelist_externals by allowlist_externals option: