Fix monitoring stack

Change-Id: I52111b2e22add5812e181eefa9488f7aee123f95
diff --git a/prometheus/server/target/dns.yml b/prometheus/server/target/dns.yml
index b51f732..5919a91 100644
--- a/prometheus/server/target/dns.yml
+++ b/prometheus/server/target/dns.yml
@@ -5,11 +5,11 @@
         dns:
           - name: 'pushgateway'
             domain:
-            - 'tasks.prometheus_pushgateway'
+            - 'tasks.monitoring_pushgateway'
             type: A
             port: 9091
           - name: 'prometheus'
             domain:
-            - 'tasks.prometheus_server'
+            - 'tasks.monitoring_server'
             type: A
             port: 9090