Deprecate JWT flow in favor of OAuth2 flow

Change-Id: I98f44d80be07dfd4bf97bcbd30510128fd035a46
diff --git a/t/proxy.t b/t/proxy.t
index 518d7a4..1db8ac9 100644
--- a/t/proxy.t
+++ b/t/proxy.t
@@ -16,6 +16,11 @@
     plugins => ['Auth'],
     proxy_inactivity_timeout => 99,
     proxy_connect_timeout => 66,
+  },
+  'Kalamar-Auth' => {
+    client_id => 2,
+    client_secret => 'k414m4r-s3cr3t',
+    oauth2 => 1
   }
 });