Note that this changes behavior slightly in case of failure as all
trace files are only written at the end.

Signed-off-by: NLuca Falavigna <dktrkranz@debian.org>

Debian Policy 4.0.1 allows packages to depend on other packages with
lower priority, hence making this check useless.
Signed-off-by: NLuca Falavigna <dktrkranz@debian.org>

Signed-off-by: NLuca Falavigna <dktrkranz@fasolo.debian.org>

Signed-off-by: NLuca Falavigna <dktrkranz@debian.org>

Signed-off-by: NLuca Falavigna <dktrkranz@fasolo.debian.org>

The queued instance processing security uploads should not make them
world-readable on the upload host.

This avoid repreating the same settings everywhere.

This makes the setup run through quite a bit faster.  This is
interesting for the integration tests.

It is no longer mentioned anywhere in the current codebase (except
update70.py).

`dak rm` really wants it.

This should avoid errors on the second try when InRelease was already
removed.

Makes it easier to comment-out already done stuff...