Override app_name to make it consistent with maven build

Change-Id: Ief3540c3fd90a553d8d2ec31cb65e657022d4bb3
diff --git a/providers/host/BUCK b/providers/host/BUCK
index 2d52e05..f5cf0c3 100644
--- a/providers/host/BUCK
+++ b/providers/host/BUCK
@@ -13,6 +13,7 @@
 )
 
 onos_app (
+    app_name = 'org.onosproject.hostprovider',
     title = 'Host Location Provider',
     category = 'Provider',
     url = 'http://onosproject.org',