Prevent null element creation

Related-PROD: PROD-34888
Change-Id: I4054fc6ede15f480b8ce13a3643b84c2bf69c794
diff --git a/octavia/meta/grafana.yml b/octavia/meta/grafana.yml
index 59f7d65..5f5c146 100644
--- a/octavia/meta/grafana.yml
+++ b/octavia/meta/grafana.yml
@@ -1,5 +1,5 @@
-dashboard:
 {%- if pillar.octavia.api is defined %}
+dashboard:
   octavia_prometheus:
     datasource: prometheus
     format: json