Fix for configuration files not being copied

The variable ONOS_HOME is defined a few lines later.
At this point ONOS_DIR needs to be used.

Change-Id: I01e8cd8db662f7f7bfbc9e70375a4bdceb7282dc
diff --git a/tools/package/onos-run-karaf b/tools/package/onos-run-karaf
index cb803e1..4718f45 100755
--- a/tools/package/onos-run-karaf
+++ b/tools/package/onos-run-karaf
@@ -71,7 +71,7 @@
 EOF
 
     # Copy config files
-    find ${ONOS_ROOT:-.}/tools/package/config -maxdepth 1 -name \*.json -exec cp {} $ONOS_HOME/config/ \;
+    find ${ONOS_ROOT:-.}/tools/package/config -maxdepth 1 -name \*.json -exec cp {} $ONOS_DIR/config/ \;
 
 else
     # Otherwise, run using the previous installation