tree 7530041ca233b5b16f6f39cb4c9056fda45045f9
parent 5de58101c21910c170ff176d023c39dfe31b76c8
author Takashi Kajinami <tkajinam@redhat.com> 1653226293 +0900
committer Takashi Kajinami <tkajinam@redhat.com> 1653226293 +0900

Bump tox minversion to 3.18.0

Since tox 3.18.0, the whitelist_externals option has been deprecated in
favor of the new allow_list_externals option[1].

This change bumps the minversion of tox so that we can replace
the deprecated option.

[1] https://github.com/tox-dev/tox/blob/master/docs/changelog.rst#v3180-2020-07-23

Change-Id: I39e2118e01d4ea87e782b7e3ba3956d5fa57f383