Phosphor-gevent: Pass the kwargs while creating WSGIServer

It was missed in earlier commit

Change-Id: Ib1ee9610e7e2a31e9247cab212eddf8b84af1011
Signed-off-by: Ratan Gupta <ratagupt@in.ibm.com>
diff --git a/servers/gevent/phosphor-gevent b/servers/gevent/phosphor-gevent
index fe69fdb..9c6d993 100644
--- a/servers/gevent/phosphor-gevent
+++ b/servers/gevent/phosphor-gevent
@@ -71,5 +71,6 @@
     if have_wsock:
         kw['handler_class'] = WebSocketHandler
     server = WSGIServer(
-        bind, app, keyfile=default_cert, certfile=default_cert, ciphers=ssl_ciphers)
+        bind, app, keyfile=default_cert, certfile=default_cert,
+        ciphers=ssl_ciphers, **kw)
     server.serve_forever()