Running "make" shouldn't use $HOME/.kube/config #4046
Description
The default make target should only run self-contained unit tests, not those that depend on the users k8s config.
ok istio.io/istio/pilot/pkg/config/clusterregistry 0.111s
2018-03-07T18:16:45.065247Z info Using user home k8s config - might affect real cluster ! Not found: /home/jeffmendoza/go/src/istio.io/istio/pilot/pkg/config/kube/crd/../../../platform/kube/config
--- FAIL: TestStoreInvariant (0.00s)
client_test.go:54: kubernetes configuration file "/home/jeffmendoza/.kube/config" does not exist
2018-03-07T18:16:45.066015Z info Using user home k8s config - might affect real cluster ! Not found: /home/jeffmendoza/go/src/istio.io/istio/pilot/pkg/config/kube/crd/../../../platform/kube/config
--- FAIL: TestIstioConfig (0.00s)
client_test.go:54: kubernetes configuration file "/home/jeffmendoza/.kube/config" does not exist
2018-03-07T18:16:45.066093Z info Using user home k8s config - might affect real cluster ! Not found: /home/jeffmendoza/go/src/istio.io/istio/pilot/pkg/config/kube/crd/../../../platform/kube/config
2018-03-07T18:16:45.066156Z info Using user home k8s config - might affect real cluster ! Not found: /home/jeffmendoza/go/src/istio.io/istio/pilot/pkg/config/kube/crd/../../../platform/kube/config
--- FAIL: TestControllerEvents (0.00s)
client_test.go:54: kubernetes configuration file "/home/jeffmendoza/.kube/config" does not exist
2018-03-07T18:16:45.066220Z info Using user home k8s config - might affect real cluster ! Not found: /home/jeffmendoza/go/src/istio.io/istio/pilot/pkg/config/kube/crd/../../../platform/kube/config
--- FAIL: TestControllerCacheFreshness (0.00s)
client_test.go:54: kubernetes configuration file "/home/jeffmendoza/.kube/config" does not exist
2018-03-07T18:16:45.066280Z info Using user home k8s config - might affect real cluster ! Not found: /home/jeffmendoza/go/src/istio.io/istio/pilot/pkg/config/kube/crd/../../../platform/kube/config
--- FAIL: TestControllerClientSync (0.00s)
client_test.go:54: kubernetes configuration file "/home/jeffmendoza/.kube/config" does not exist
FAIL
FAIL istio.io/istio/pilot/pkg/config/kube/crd 0.215s