Adding set -e to build commands

Change-Id: I72d02db1f6f8484f4ffb2d00406e6af2c866a7fb
diff --git a/tools/build/onos-upload-bits b/tools/build/onos-upload-bits
index e0d5524..e3bb83c 100755
--- a/tools/build/onos-upload-bits
+++ b/tools/build/onos-upload-bits
@@ -2,6 +2,9 @@
 # -----------------------------------------------------------------------------
 # Uploads ONOS distributable bits.
 # -----------------------------------------------------------------------------
+
+set -e
+
 [ ! -d "$ONOS_ROOT" ] && echo "ONOS_ROOT is not defined" >&2 && exit 1
 . $ONOS_ROOT/tools/build/envDefaults