Windows: Plumb through user

Signed-off-by: John Howard <jhoward@microsoft.com>
Upstream-commit: 5207ff7202327bd06fa7e8df4c58d6a944899b60
Component: engine

components/engine/daemon/exec_windows.go

@@ -9,5 +9,6 @@ import (
 func execSetPlatformOpt(c *container.Container, ec *exec.Config, p *libcontainerd.Process) error {
 	// Process arguments need to be escaped before sending to OCI.
 	p.Args = escapeArgs(p.Args)
+	p.User.Username = ec.User
 	return nil
 }