Windows: Updates Windows Vendoring

Updates windows dependent libraries for vendoing.

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

@@ -0,0 +1,11 @@
+package uvm
+
+import (
+	"sync/atomic"
+)
+
+// ContainerCounter is used for where we layout things for a container in
+// a utility VM. For WCOW it'll be C:\c\N\. For LCOW it'll be /run/gcs/c/N/.
+func (uvm *UtilityVM) ContainerCounter() uint64 {
+	return atomic.AddUint64(&uvm.containerCounter, 1)
+}