Code review comment for ~paelzer/ubuntu/+source/chrony:merge-cosmic-3.3-1

As discussed on IRC, now seeing the changes they are IMHO too small to justify a conffile prompt.
We should all try to remember, and on the day we make functional changes anyway (so we can't avoid the prompt) should add them there.
I pushed a branch default-conf-wording to hopefully remember some day.
But for now I'm refusing to make the changes part of this merge.

Still waiting for a +1 on the merge in general.