Over time we've had various different reasons for installing our own
OpenAFS packages in various situations and we haven't kept the when:
flags totally up to date. Currently, we need the 1.8.6-5 packages
with the January 20201 timestamp fix installed everywhere; fix this.
I think that on long-running servers, the have the PPA installed from
prior iterations (I don't think we've ever *removed* it). So things
like executors are still running with our packages, perhaps somewhat
unintentionally.
Update the comments a little to reflect what's going on.
Change-Id: I6a58c23daf85cf8fa005e3dad84a665343a947bc
5eeeedbc8b