Publish top level Maven POMs as part of release build

Change-Id: I6e10d4af4d8b59e3f5e15f001d160838a3c35266
diff --git a/BUCK b/BUCK
index a16a273..773e0c6 100644
--- a/BUCK
+++ b/BUCK
@@ -58,3 +58,13 @@
                'tools/build/envDefaults'
            ],
 )
+
+only_lib_dep_pom(
+    name = 'top-level-pom',
+    src = 'pom.xml',
+    out = 'onos.pom',
+)
+
+
+
+