Code review comment for lp:~apw/ubuntu-archive-tools/copy-proposed-kernel--support-lrg-lrs

Generally looks good. A whitespace comment inline, but that's not really important.

One thing I just would like to make sure is intended: from the commit messages I understood that we do not want to allow unembargoing only for selected, safe places. But this can be overriden via the --unembargo argument, right? So it's like a hard override, skipping over all checks, right?