Generate random keystone users

Change-Id: I8dbd07b10d29b43d1c35fa76bcaa0f0efb32beda
Related-Prod: PROD-29868
diff --git a/neutron/control/ovn/single.yml b/neutron/control/ovn/single.yml
index 5305fc9..77b276c 100644
--- a/neutron/control/ovn/single.yml
+++ b/neutron/control/ovn/single.yml
@@ -29,8 +29,12 @@
       compute:
         region: ${_param:openstack_region}
       database:
+        user: ${_param:mysql_neutron_username}
+        password: ${_param:mysql_neutron_password}
         host: ${_param:openstack_database_address}
       identity:
+        user: ${_param:keystone_neutron_username}
+        password: ${_param:keystone_neutron_password}
         region: ${_param:openstack_region}
       message_queue:
         members: