fix golint issues in test/e2e_node

test/e2e_node/e2e_node_suite_test.go

@@ -18,7 +18,7 @@ limitations under the License.
 
 // To run tests in this suite
 // NOTE: This test suite requires password-less sudo capabilities to run the kubelet and kube-apiserver.
-package e2e_node
+package e2enode
 
 import (
 	"bytes"
@@ -305,7 +305,7 @@ func getNode(c *clientset.Clientset) (*v1.Node, error) {
 	nodes, err := c.CoreV1().Nodes().List(metav1.ListOptions{})
 	framework.ExpectNoError(err, "should be able to list nodes.")
 	if nodes == nil {
-		return nil, fmt.Errorf("the node list is nil.")
+		return nil, fmt.Errorf("the node list is nil")
 	}
 	gomega.Expect(len(nodes.Items) > 1).NotTo(gomega.BeTrue(), "the number of nodes is more than 1.")
 	if len(nodes.Items) == 0 {