Only push maven artifacts that are useful to external apps

Change-Id: I87e077334c69402f0e178aceb14116597760f351
diff --git a/tools/build/onos-prepare-release b/tools/build/onos-prepare-release
index 4088869..8e4ecc6 100755
--- a/tools/build/onos-prepare-release
+++ b/tools/build/onos-prepare-release
@@ -31,10 +31,9 @@
 git tag -l | grep -q "$ONOS_VERSION\$" &&
   { echo "ERROR: Version already exists"; exit -1; }
 
-
+# Copy local buck configuration to new tree
 cp $ONOS_ROOT/.buckconfig.local $DIR/
 
-
 export ONOS_ROOT=$DIR
 . $ONOS_ROOT/tools/build/envDefaults
 exec bash $COMMAND