Fix for mac learning parameter

Change-Id: Iccfa2359e76f6e55fa02e7f5f0a163f37efccea0
diff --git a/jjb/pipeline/voltha/master/voltha-scale-test.groovy b/jjb/pipeline/voltha/master/voltha-scale-test.groovy
index 34c7952..6ec2fe3 100644
--- a/jjb/pipeline/voltha/master/voltha-scale-test.groovy
+++ b/jjb/pipeline/voltha/master/voltha-scale-test.groovy
@@ -465,7 +465,7 @@
               -v withEapol:${withEapol} \
               -v withDhcp:${withDhcp} \
               -v withIgmp:${withIgmp} \
-              -v withMaclearning: ${withMaclearning} \
+              -v withMaclearning:${withMaclearning} \
               --noncritical non-critical \
               -e onu-upgrade -e igmp -e teardown "