Exclude yangtools from obs

Change-Id: Ibfd651ab7eccdf315c83da8ed11a6cf24935bbe9
diff --git a/tools/dev/bin/onos-build-selective.exclude b/tools/dev/bin/onos-build-selective.exclude
index 487f848..33bf08a 100644
--- a/tools/dev/bin/onos-build-selective.exclude
+++ b/tools/dev/bin/onos-build-selective.exclude
@@ -7,4 +7,5 @@
 .*/jdvue/.*
 .*/ovsdb/api/.*
 .*/netconf/flow/.*
-.*/vtn/sfcmgr/.*
\ No newline at end of file
+.*/vtn/sfcmgr/.*
+/tools/package/yangtools/.*
\ No newline at end of file