Stages changes for Postfix mail queue lifetime.
Stages changes for Postfix mail queue lifetime.

The changes described #1102 haven't made it into
a release yet, so don't test for the relevant line.
I was already editing these spectests, though, so
it was convenient to add the line and leave it
commented out until we actually want to test for it.

mark-in/securedrop-prov-upstream,mark-in/securedrop-prov-upstream,mark-in/securedrop-prov-upstream,mark-in/securedrop-prov-upstream