Adding creation and publishing of onos-build-conf.jar

Change-Id: Ie6b83725e6c6c5f17a82603c510d5b4b10636e48
diff --git a/BUILD b/BUILD
index f71c4b7..16f97da 100644
--- a/BUILD
+++ b/BUILD
@@ -4,6 +4,7 @@
 filegroup(
     name = "onos",
     srcs = CORE + APPS + [
+        "//tools/build/conf:onos-build-conf",
         ":onos-package-admin",
         ":onos-package-test",
         ":onos-package",