Adding debian packaging.

Change-Id: I01cc2b9e3503c9c1621f5428f65b0c8d5ef1abc5
diff --git a/tools/build/envDefaults b/tools/build/envDefaults
index 38a1bc1..494abdd 100644
--- a/tools/build/envDefaults
+++ b/tools/build/envDefaults
@@ -25,6 +25,8 @@
 export ONOS_BITS=onos-${ONOS_VERSION%~*}
 export ONOS_STAGE_ROOT=${ONOS_STAGE_ROOT:-/tmp}
 export ONOS_STAGE=$ONOS_STAGE_ROOT/$ONOS_BITS
+export ONOS_DEB_ROOT=$ONOS_STAGE_ROOT/deb
+export ONOS_DEB=$ONOS_STAGE.deb
 export ONOS_TAR=$ONOS_STAGE.tar.gz
 export ONOS_ZIP=$ONOS_STAGE.zip