Skip failing Windows unit tests (volume)

As discussed during the SIG Testing meeting on January 10, 2023, failing
Windows unit tests are now skipped.
These changes should be reverted when the unit tests wil get fixed.
Mentioned SIG Testing meeting:
https://docs.google.com/document/d/1z8MQpr_jTwhmjLMUaqQyBk1EYG_Y_3D4y4YdMJ7V1Kk/edit#heading=h.qwblxf2uhgoo

pkg/volume/downwardapi/downwardapi_test.go

@@ -21,6 +21,7 @@ import (
 	"io/ioutil"
 	"os"
 	"path/filepath"
+	"runtime"
 	"testing"
 
 	"k8s.io/api/core/v1"
@@ -72,6 +73,11 @@ func TestCanSupport(t *testing.T) {
 }
 
 func TestDownwardAPI(t *testing.T) {
+	// Skip tests that fail on Windows, as discussed during the SIG Testing meeting from January 10, 2023
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping test that fails on Windows")
+	}
+
 	labels1 := map[string]string{
 		"key1": "value1",
 		"key2": "value2",

pkg/volume/flexvolume/probe_test.go

@@ -72,6 +72,11 @@ func TestProberExistingDriverBeforeInit(t *testing.T) {
 
 // Probes newly added drivers after prober is running.
 func TestProberAddRemoveDriver(t *testing.T) {
+	// Skip tests that fail on Windows, as discussed during the SIG Testing meeting from January 10, 2023
+	if goruntime.GOOS == "windows" {
+		t.Skip("Skipping test that fails on Windows")
+	}
+
 	// Arrange
 	_, fs, watcher, prober := initTestEnvironment(t)
 	prober.Probe()
@@ -205,6 +210,11 @@ func TestEmptyPluginDir(t *testing.T) {
 
 // Issue an event to remove plugindir. New directory should still be watched.
 func TestRemovePluginDir(t *testing.T) {
+	// Skip tests that fail on Windows, as discussed during the SIG Testing meeting from January 10, 2023
+	if goruntime.GOOS == "windows" {
+		t.Skip("Skipping test that fails on Windows")
+	}
+
 	// Arrange
 	driverPath, fs, watcher, _ := initTestEnvironment(t)
 	err := fs.RemoveAll(pluginDir)
@@ -226,6 +236,11 @@ func TestRemovePluginDir(t *testing.T) {
 
 // Issue an event to remove plugindir. New directory should still be watched.
 func TestNestedDriverDir(t *testing.T) {
+	// Skip tests that fail on Windows, as discussed during the SIG Testing meeting from January 10, 2023
+	if goruntime.GOOS == "windows" {
+		t.Skip("Skipping test that fails on Windows")
+	}
+
 	// Arrange
 	_, fs, watcher, _ := initTestEnvironment(t)
 	// Assert

pkg/volume/local/local_test.go

@@ -244,6 +244,11 @@ func TestInvalidLocalPath(t *testing.T) {
 }
 
 func TestBlockDeviceGlobalPathAndMountDevice(t *testing.T) {
+	// Skip tests that fail on Windows, as discussed during the SIG Testing meeting from January 10, 2023
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping test that fails on Windows")
+	}
+
 	// Block device global mount path testing
 	tmpBlockDir, plug := getDeviceMountablePluginWithBlockPath(t, true)
 	defer os.RemoveAll(tmpBlockDir)

pkg/volume/rbd/rbd_test.go

@@ -359,6 +359,11 @@ type testcase struct {
 }
 
 func TestPlugin(t *testing.T) {
+	// Skip tests that fail on Windows, as discussed during the SIG Testing meeting from January 10, 2023
+	if runtime.GOOS == "windows" {
+		t.Skip("Skipping test that fails on Windows")
+	}
+
 	tmpDir, err := utiltesting.MkTmpdir("rbd_test")
 	if err != nil {
 		t.Fatalf("error creating temp dir: %v", err)

pkg/volume/util/hostutil/hostutil_test.go

@@ -119,6 +119,11 @@ func createSocketFile(socketDir string) (string, error) {
 }
 
 func TestGetFileType(t *testing.T) {
+	// Skip tests that fail on Windows, as discussed during the SIG Testing meeting from January 10, 2023
+	if goruntime.GOOS == "windows" {
+		t.Skip("Skipping test that fails on Windows")
+	}
+
 	hu := NewHostUtil()
 
 	testCase := []struct {