VOL-3165 Fix alarm test

Change-Id: I600f9e010a0f5fe547a49983534f81889137432c
diff --git a/docker/volt.config b/docker/volt.config
index 17acf5d..ed9bab5 100644
--- a/docker/volt.config
+++ b/docker/volt.config
@@ -16,7 +16,7 @@
 
 apiVersion: v3
 server: voltha-api.voltha:55555
-kafka: voltha-kafka-0.voltha-kafka-headless.voltha:9092
+kafka: kafka:9092
 tls:
   useTls: false
   caCert: ""