[VOL-4359] Added ETCD data cleanup verification after device delete

Change-Id: Ic3e3eced67826c6c7277cc8c21f0e6241b7e9a0b
diff --git a/tests/functional/Voltha_AlarmTests.robot b/tests/functional/Voltha_AlarmTests.robot
index 9b7da61..57ebf31 100755
--- a/tests/functional/Voltha_AlarmTests.robot
+++ b/tests/functional/Voltha_AlarmTests.robot
@@ -40,6 +40,7 @@
 ${BBSIMCTL_NAMESPACE}      voltha
 ${VOLTCTL_POD_NAME}    voltctl
 ${BBSIMCTL_POD_NAME}    bbsim
+${INFRA_NAMESPACE}      default
 
 *** Test Cases ***
 Ensure required pods Running