tests: Teporarily disable test_windows_guest_snapshot_restore

This test is reliably failing on our CI and we need time to investigate
why.

See: #2126

Signed-off-by: Rob Bradford <robert.bradford@intel.com>

tests/integration.rs

@@ -5617,7 +5617,9 @@ mod tests {
             handle_child_output(r, &output);
         }
 
+        // See #2126
         #[test]
+        #[ignore]
         fn test_windows_guest_snapshot_restore() {
             let tmp_dir = TempDir::new("ch").unwrap();
             let mut workload_path = dirs::home_dir().unwrap();