check and use local buck config when doing a release

Change-Id: I39d3e381d8f4c291878ab5187dcad9318f199599
diff --git a/tools/build/onos-prepare-release b/tools/build/onos-prepare-release
index ccf9152..9c4ce71 100755
--- a/tools/build/onos-prepare-release
+++ b/tools/build/onos-prepare-release
@@ -29,6 +29,10 @@
 git tag -l | grep -q "$ONOS_VERSION\$" &&
   { echo "ERROR: Version already exists"; exit -1; }
 
+
+cp $ONOS_ROOT/.buckconfig.local $DIR/
+
+
 export ONOS_ROOT=$DIR
 . $ONOS_ROOT/tools/build/envDefaults
 exec bash -i