Fix dependency error in test script

[athos-ribeiro]

The zipp distribution is pulled in in our dependency chain for CI runs. This distribution recently dropped the python 2 support. We need to fetch an older version of this dependency for python 2 runs.

• https://github.com/jaraco/zipp/issues/28

Signed-off-by: Athos Ribeiro athos@redhat.com

Maintainers will complete the following section:

• [ ] Commit messages are descriptive enough
• [ ] "Signed-off-by:" line is present in each commit
• [ ] Code coverage from testing does not decrease and new code is covered
• [ ] JSON/YAML configuration changes are updated in the relevant schema
• [ ] Pull request includes link to an osbs-docs PR for user documentation updates