Summary:
This adds some logging related to the update testing workflow,
so we have some idea what we actually tested. We log precisely
which packages were actually downloaded from the update - this
is important as updates can be edited and when examining results
we'll want to know which packages actually got used. We also
add a new module which runs at the end of postinstall and tries
to figure out which packages from the update were installed in
the course of the test. This still isn't a guarantee the test
actually *tested them* in any way, but it at least means they
got installed successfully and didn't interfere with the test.
Test Plan:
Run the update test workflow, check the logs get
uploaded and seem accurate (sometimes some RPM garbage messages
wind up in the package log, I'm not too worried about that at
present). Run the compose test workflow and check it didn't
break.
Reviewers: jsedlak
Reviewed By: jsedlak
Subscribers: tflink
Differential Revision: https://phab.qa.fedoraproject.org/D1149
