Adding cleaning of salt-keys to the cleaning script

Change-Id: I17fdc86d66bfdda868dc5af9acc791122eaa1e76
diff --git a/day01-image/scripts/cleanup.sh b/day01-image/scripts/cleanup.sh
index 2b5ccbc..07a1a9d 100644
--- a/day01-image/scripts/cleanup.sh
+++ b/day01-image/scripts/cleanup.sh
@@ -10,6 +10,10 @@
 echo > /etc/apt/sources.list  || true
 rm -vf /usr/sbin/policy-rc.d || true
 
+
+echo "removeing all previously accepted salt keys"
+salt-key -D -y || true
+
 echo "cleaning up reclass"
 rm -rf /srv/salt/reclass || true
 rm -rf /srv/salt/scripts || true