Refresh OC cassandra repo

  * Remove cassandra repo from oc4 deployments -
    in oc4 cassandra inside docker containers.

Change-Id: I40a6106d1f45c6e4d1521b73a8c6a83dfc97fd18
diff --git a/classes/cluster/virtual-mcp10-contrail/openstack/control.yml b/classes/cluster/virtual-mcp10-contrail/openstack/control.yml
index 9683fdf..b5a9e2c 100755
--- a/classes/cluster/virtual-mcp10-contrail/openstack/control.yml
+++ b/classes/cluster/virtual-mcp10-contrail/openstack/control.yml
@@ -5,7 +5,7 @@
 - system.linux.system.repo.mcp.openstack
 - system.linux.system.repo.mcp.extra
 - system.linux.system.repo.mcp.apt_mirantis.saltstack
-- system.linux.system.repo.cassandra
+- system.linux.system.repo.mcp.apt_mirantis.cassandra
 - system.memcached.server.single
 - system.rabbitmq.server.cluster
 - system.rabbitmq.server.vhost.openstack