servicebroker: Change the order to invoke express middleware
servicebroker: Change the order to invoke express middleware

[#121943583]

pradyutsarma/app-autoscaler,pradyutsarma/app-autoscaler,pradyutsarma/app-autoscaler,pradyutsarma/app-autoscaler,cloudfoundry-incubator/app-autoscaler,qibobo/app-autoscaler,qibobo/app-autoscaler,qibobo/app-autoscaler,cloudfoundry-incubator/app-autoscaler,cloudfoundry-incubator/app-autoscaler,qibobo/app-autoscaler,cloudfoundry-incubator/app-autoscaler