Add a separate job for the release build

Change-Id: Ie29f29cfa4b1aaf0b0efe2e3993f337f26548780
diff --git a/jjb/onos/onos-release-build.sh b/jjb/onos/onos-release-build.sh
new file mode 100644
index 0000000..f414626
--- /dev/null
+++ b/jjb/onos/onos-release-build.sh
@@ -0,0 +1,15 @@
+#!/bin/bash -ex
+
+# set up ONOS build environment
+ONOS_ROOT=`pwd`
+. tools/build/envDefaults
+
+env
+
+# set up release build credentials
+. onos-build-credentials
+
+env
+
+# run the build
+onos-build-and-upload ${ONOS_VERSION} ${ONOS_NEXT_VERSION} ${GERRIT_BRANCH}