packaging: setup: allow uninstall ca,cert.conf

engine-setup did not add cacert.conf and cert.conf to the
uninstall file. This caused them to not be deleted on engine-cleanup.

Change-Id: I8c5c4f956bdd824268eb478fabeb5c77392acbb7
Signed-off-by: Yedidyah Bar David <didi@redhat.com>