fix default working directory hostProcess

Per https://github.com/kubernetes/enhancements/tree/master/keps/sig-windows/1981-windows-privileged-container-support#container-mounts
the default working directory for `hostProcess` containers should
be `C:\hpc`, however the current default is set to windows default
which is `C:\`.

Signed-off-by: Maksim An <maksiman@microsoft.com>
(cherry picked from commit c7ea06a)

pkg/cri/sbserver/container_create.go

@@ -855,6 +855,8 @@ func (c *criService) buildWindowsSpec(
 		specOpts = append(specOpts, oci.WithProcessCwd(config.GetWorkingDir()))
 	} else if imageConfig.WorkingDir != "" {
 		specOpts = append(specOpts, oci.WithProcessCwd(imageConfig.WorkingDir))
+	} else if cntrHpc {
+		specOpts = append(specOpts, oci.WithProcessCwd(`C:\hpc`))
 	}
 
 	if config.GetTty() {