Fix path to ONOS tools

Change-Id: I6a647e5722f844aeb2aadc38c1ae8e972fc669f8
diff --git a/jjb/onos/onos-release-build-verify.sh b/jjb/onos/onos-release-build-verify.sh
index 5468ea8..987a839 100644
--- a/jjb/onos/onos-release-build-verify.sh
+++ b/jjb/onos/onos-release-build-verify.sh
@@ -1 +1,4 @@
+#!/bin/bash -ex
+ONOS_ROOT=`pwd`
+. tools/build/envDefaults
 onos-build-and-upload 1.12.0-testbuild 1.12-SNAPSHOT master --dry-run