Use `jenkins-tox-container` image instead of `jenkins-tox3-container` image.
Use `jenkins-tox-container` image instead of `jenkins-tox3-container` image.

Maintenance update 9039 on opensuse increased `pluggy` version to 0.6.0. This
rendered `python3-tox` unusable with that pluggy version, as the current version
in OBS requires `pluggy` (pluggy>=0.3.0,<0.4.0).

Since this is making salt pipelines fail we are including the `python3` environment
on the regular `jenkins-tox-container`.

[1] https://build.suse.de/request/show/182868

kubic-project/salt,ereslibre/salt,kubic-project/salt,ereslibre/salt,ereslibre/salt,kubic-project/salt