Merge pull request #16780 from Microsoft/jjh/vfs-build-tags

Fix VFS build tags

daemon/graphdriver/vfs/driver.go

@@ -1,4 +1,4 @@
-// +build linux windows
+// +build daemon
 
 package vfs
 

daemon/graphdriver/vfs/driver_unsupported.go

@@ -1,3 +1,3 @@
-// +build !linux,!windows
+// +build !daemon
 
 package vfs