fix bug on cookie using https (#752)

Signed-off-by: Denis barbaron <denis.barbaron@orange.com>

lib/units/app/index.js

@@ -72,6 +72,7 @@ module.exports = function(options) {
   app.use(cookieSession({
     name: options.ssid
   , keys: [options.secret]
+  , httpOnly: false
   }))
 
   app.use(auth({