Generate random keystone users

Change-Id: I8dbd07b10d29b43d1c35fa76bcaa0f0efb32beda
Related-Prod: PROD-29868
diff --git a/cinder/volume/single.yml b/cinder/volume/single.yml
index 74f2344..52ecaf1 100644
--- a/cinder/volume/single.yml
+++ b/cinder/volume/single.yml
@@ -15,6 +15,8 @@
       enabled: True
       image_conversion_dir: ${_param:cinder_image_conversion_dir_path}
       database:
+        user: ${_param:mysql_cinder_username}
+        password: ${_param:mysql_cinder_password}
         host: ${_param:openstack_database_address}
         x509:
           enabled: ${_param:openstack_mysql_x509_enabled}
@@ -42,6 +44,8 @@
         ssl:
           enabled: ${_param:rabbitmq_ssl_enabled}
       identity:
+        user: ${_param:keystone_cinder_username}
+        password: ${_param:keystone_cinder_password}
         host: ${_param:openstack_control_address}
         protocol: ${_param:cluster_internal_protocol}
         region: ${_param:openstack_region}