Fix running e2e against local cluster

cluster/local/util.sh

@@ -16,5 +16,10 @@
 # Perform preparations required to run e2e tests
 function prepare-e2e() {
   echo "Local doesn't need special preparations for e2e tests" 1>&2
-
+}
+
+# Must ensure that the following ENV vars are set
+function detect-master {
+  export KUBE_MASTER_IP="127.0.0.1"
+  export KUBE_MASTER="localhost"
 }