adding salt-formulas cassandra and zookeeper

Change-Id: I61765c775538df9c54c1450c9e50ed77c5f9e509
diff --git a/salt/master/formula/pkg/saltstack.yml b/salt/master/formula/pkg/saltstack.yml
index e4a4c1c..a62a272 100644
--- a/salt/master/formula/pkg/saltstack.yml
+++ b/salt/master/formula/pkg/saltstack.yml
@@ -40,3 +40,9 @@
             xtrabackup:
               source: pkg
               name: salt-formula-xtrabackup
+            zookeeper:
+              source: pkg
+              name: salt-formula-zookeeper
+            cassandra:
+              source: pkg
+              name: salt-formula-cassandra