Windows: Updates Windows Vendoring

Updates windows dependent libraries for vendoing.

vendor/github.com/Microsoft/hcsshim/internal/uvm/terminate.go

@@ -0,0 +1,7 @@
+package uvm
+
+// Terminate requests a utility VM terminate. If IsPending() on the error returned is true,
+// it may not actually be shut down until Wait() succeeds.
+func (uvm *UtilityVM) Terminate() error {
+	return uvm.hcsSystem.Terminate()
+}