Build drivers with bazel

Change-Id: I033ac32b3ef8119fc65e046c821ff17f12709261
diff --git a/apps/flowspec-api/BUILD b/apps/flowspec-api/BUILD
new file mode 100644
index 0000000..f53e75d
--- /dev/null
+++ b/apps/flowspec-api/BUILD
@@ -0,0 +1,10 @@
+BUNDLES = [
+    "//apps/flowspec-api/flowapi:onos-apps-flowspec-api-flowapi",
+]
+
+onos_app(
+    description = "ONOS framework applications",
+    included_bundles = BUNDLES,
+    title = "Flowspec API",
+    url = "http://onosproject.org",
+)