Add an envvar for the python version used for global tools
This avoids having to hardcode it in the swh-jenkins-jobs repo.
Allows a cleaner (?) implementation of swh-jenkins-jobs!179 (merged)
Staging instance, all changes can be removed at any time
This avoids having to hardcode it in the swh-jenkins-jobs repo.
Allows a cleaner (?) implementation of swh-jenkins-jobs!179 (merged)