Speed up test, by not running with custom etcd prefix

hack/benchmark-integration.sh

@@ -37,7 +37,7 @@ runTests() {
     KUBE_RACE="-race" \
     KUBE_TEST_API_VERSIONS="v1" \
     KUBE_TIMEOUT="-timeout 10m" \
-    KUBE_TEST_ETCD_PREFIXES="registry"\
+    KUBE_TEST_ETCD_PREFIXES="registry" \
     ETCD_CUSTOM_PREFIX="None" \
     KUBE_TEST_ARGS="${ARGS}" \
     "${KUBE_ROOT}/hack/test-go.sh" test/integration

hack/test-go.sh

@@ -60,9 +60,8 @@ KUBE_GOVERALLS_BIN=${KUBE_GOVERALLS_BIN:-}
 # "v1,compute/v1alpha1,experimental/v1alpha2;v1,compute/v2,experimental/v1alpha3"
 KUBE_TEST_API_VERSIONS=${KUBE_TEST_API_VERSIONS:-"v1,extensions/v1beta1,metrics/v1alpha1,federation/v1alpha1;v1,autoscaling/v1,batch/v1,batch/v2alpha1,extensions/v1beta1,apps/v1alpha1,metrics/v1alpha1,federation/v1alpha1,policy/v1alpha1,rbac.authorization.k8s.io/v1alpha1"}
 # once we have multiple group supports
-# Run tests with the standard (registry) and a custom etcd prefix
-# (kubernetes.io/registry).
-KUBE_TEST_ETCD_PREFIXES=${KUBE_TEST_ETCD_PREFIXES:-"registry,kubernetes.io/registry"}
+# Run tests with the standard (registry) etcd prefix.
+KUBE_TEST_ETCD_PREFIXES=${KUBE_TEST_ETCD_PREFIXES:-"registry"}
 # Create a junit-style XML test report in this directory if set.
 KUBE_JUNIT_REPORT_DIR=${KUBE_JUNIT_REPORT_DIR:-}
 # Set to 'y' to keep the verbose stdout from tests when KUBE_JUNIT_REPORT_DIR is