Remove default password

Change-Id: I8a73345077863370e95e2df19aaa0ee889fcd275
diff --git a/metadata/service/server/cluster.yml b/metadata/service/server/cluster.yml
index d01af2c..b63419c 100644
--- a/metadata/service/server/cluster.yml
+++ b/metadata/service/server/cluster.yml
@@ -3,8 +3,6 @@
 classes:
 - service.keystone.support
 parameters:
-  _param:
-    mysql_keystone_password: password
   keystone:
     server:
       enabled: true
@@ -48,4 +46,4 @@
         - host: ${_param:cluster_node02_address}
           port: 11211
         - host: ${_param:cluster_node03_address}
-          port: 11211
\ No newline at end of file
+          port: 11211