LCOW: Update for platforms latest schema

Signed-off-by: John Howard <jhoward@microsoft.com>

libcontainerd/client_windows.go

@@ -299,7 +299,9 @@ func (clnt *client) createLinux(containerID string, checkpoint string, checkpoin
 		Owner:         defaultOwner,
 		TerminateOnLastHandleClosed: true,
 		HvRuntime: &hcsshim.HvRuntime{
-			ImagePath: `c:\program files\lcow`,
+			ImagePath:       `c:\program files\lcow`,
+			LinuxKernelFile: `bootx64.efi`,
+			LinuxInitrdFile: `initrd.img`,
 		},
 	}