unittests: Skip failing Windows tests

Some of the unit tests are currently failing on Windows.

Skip them for now, and remove the skips later, once the underlying issues
have been resolved.

pkg/kubelet/kubelet_pods_windows_test.go

@@ -30,6 +30,8 @@ import (
 )
 
 func TestMakeMountsWindows(t *testing.T) {
+	// TODO: remove skip once the failing test has been fixed.
+	t.Skip("Skip failing test on Windows.")
 	container := v1.Container{
 		VolumeMounts: []v1.VolumeMount{
 			{