Fix typo in hawkular-cassandra RC

roles/openshift_metrics/templates/hawkular_cassandra_rc.j2

@@ -35,7 +35,7 @@ spec:
         ports:
         - name: cql-port
           containerPort: 9042
-        - name: thift-port
+        - name: thrift-port
           containerPort: 9160
         - name: tcp-port
           containerPort: 7000