Update notify-if-unstable email address.

tests/bbr.groovy
----------------
Matteo@onf email address is no longer active.  Substitute a temporary
recipient until we can setup a group email address to avoid hardcoded
values in the future.

Change-Id: I467c6ec3096253621e2032456d8892f8bdeedf7b
diff --git a/tests/bbr.groovy b/tests/bbr.groovy
index 0387f5c..19a5b22 100644
--- a/tests/bbr.groovy
+++ b/tests/bbr.groovy
@@ -122,7 +122,7 @@
   post {
     always {
       archiveArtifacts artifacts: '*.logs'
-      step([$class: 'Mailer', notifyEveryUnstableBuild: true, recipients: "teo@opennetworking.org", sendToIndividuals: false])
+      step([$class: 'Mailer', notifyEveryUnstableBuild: true, recipients: "joey@opennetworking.org", sendToIndividuals: false])
     }
     success {
       plot([