Brian Rosmaita 22a3169576 [stable-only] Pin tox <4 ...

Continue to use tox 3 in the stable branches.

Two changes:
- .zuul.yaml: set the ensure_tox_version to use <4, which will
  tell zuul to install tox<4 if it's not present
- tox.ini: set requires=tox<4 so that if tox has been installed
  already, our tox-based jobs will use tox 3 to run the tests

Change-Id: Ica4c0a1d4f861e528ce8995766e82541dc710e0f

2023-01-05 11:45:13 -05:00

3.4 KiB

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