Add routing app API to list of published artifacts

Change-Id: Ic24405e4d516536e30b404d5f9a6b7d84cd06608
(cherry picked from commit fc78fd74665f8a8c2fe881892e08af1e4d748b95)
diff --git a/tools/build/publish-target-list b/tools/build/publish-target-list
index 685072c..abd38fd 100644
--- a/tools/build/publish-target-list
+++ b/tools/build/publish-target-list
@@ -21,3 +21,4 @@
     //apps/optical-model:onos-apps-optical-model
     //web/api:onos-rest
     //protocols/netconf/api:onos-protocols-netconf-api
+    //apps/routing-api:onos-apps-routing-api