To run e2e test:

$ pwd
.../src/istio.io/istio

Export KUBECONFIG to your kube config file, e.g.,

$ export KUBECONFIG="[YourPath]/.kube/config"

Run e2e_piot

$ make e2e_pilot 

Replace e2e_pilot with other targets accordingly if necessary. The detail can be found in tests/istio.mk.