Clean up external connectiviy test
Clean up external connectiviy test

[#142640345]

Signed-off-by: David McClure <f2d486abbc9bad1727caf3ba835e0fcc02bb2355@pivotal.io>

cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release,cloudfoundry-incubator/cf-networking-release