Code review comment for lp:~mbp/bzr/408824-test-upgrade

> this causes testfailures I think:
> ERROR:
> blackbox.test_upgrade.TestWithUpgradableBranches.test_upgrade_up_to_date
> 'function' object has no attribute 'rsplit'

It does however reduce overall failures, so I'm merging it into my 2a default branch.