Adding obs exclusion.

Change-Id: I27cf67e131ad6ed566e4714a42732d2f7a2a2409
diff --git a/tools/dev/bin/onos-build-selective.exclude b/tools/dev/bin/onos-build-selective.exclude
index 94bc7ca..1265494 100644
--- a/tools/dev/bin/onos-build-selective.exclude
+++ b/tools/dev/bin/onos-build-selective.exclude
@@ -5,4 +5,5 @@
 .*/openflow/drivers/.*
 .*/cord-gui/.*
 .*/jdvue/.*
-.*/ovsdb/api/.*
\ No newline at end of file
+.*/ovsdb/api/.*
+.*/netconf/flow/.*
\ No newline at end of file