Slower builders are still having trouble running cassandane. Upstream
suggested that configuring the spawned daemons with a higher
client_timeout value might help.
Pull a couple of small patches from upstream which fix several
JMAP-related tests.
Rework the test exclusion list; there are now only a few which need to
be excluded.
Also drop a patch to cassandane to handle the quota->cyr_quota rename;
we can achieve the same thing now without patching.
Working with upstream I got some fixes pushed and found out about a
couple of other tricks.
Was able to drop some patches and now cassandane runs 603 tests
successfully. The only tests excluded now are those which are expected
to fail with 3.0.1, and five coredump tests which would require removal
of systemd coredump redirection in order to be useful.
