Update full linter list and enable some easily resolved new ones

api/krusty/fnplugin_test.go

@@ -214,6 +214,7 @@ spec:
 }
 
 func skipIfNoDocker(t *testing.T) {
+	t.Helper()
 	if _, err := exec.LookPath("docker"); err != nil {
 		t.Skip("skipping because docker binary wasn't found in PATH")
 	}

api/krusty/pluginenv_test.go

@@ -67,6 +67,7 @@ metadata:
 }
 
 func makeTmpDir(t *testing.T) string {
+	t.Helper()
 	base, err := os.Getwd()
 	if err != nil {
 		t.Fatalf("err %v", err)