jf admin upgrade causes a lot of errors

[FabiPi3]

Basically not using the test_version_upgrade option isn't working.

The following parse_version call on the None value gives a TypeError.

And in the following calls to dry_run and upgrade the test version is used instead of the actual target version.

Do I misunderstand the use of this command?

I am referring the up-to-date master branch.

[gpetretto]

This should be the same issue as in #211. Closing as a duplicate, but feel free to reopen if the proposed solution does not solve the problem.