Add alerta username and password to models

Change-Id: I422ec5d59fe1414abfa2f2e2f25421afcc9f0626
PROD-related: PROD-21265
diff --git a/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/init.yml b/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/init.yml
index 6d10dd1..71ed20b 100644
--- a/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/init.yml
+++ b/classes/cluster/virtual-mcp11-k8s-contrail/stacklight/init.yml
@@ -12,7 +12,8 @@
     # Prometheus
     prometheus_control_address: ${_param:stacklight_monitor_address}
     stacklight_log_address: ${_param:stacklight_monitor_address}
-
+    alerta_admin_username: "admin@alerta.io"
+    alerta_admin_password: "alerta"
     mysql_admin_user: root
     mysql_admin_password: workshop