added GinkgoRecover to avoid panic in gorouting
added GinkgoRecover to avoid panic in gorouting

[#167224370](https://www.pivotaltracker.com/story/show/167224370)

cloudfoundry-incubator/vizzini,cloudfoundry-incubator/vizzini,pivotal-cf-experimental/vizzini,pivotal-cf-experimental/vizzini