Update CRI to master

Signed-off-by: Michael Crosby <crosbymichael@gmail.com>

vendor/github.com/opencontainers/runtime-tools/filepath/separator.go

@@ -1,9 +0,0 @@
-package filepath
-
-// Separator is an explicit-OS version of path/filepath's Separator.
-func Separator(os string) rune {
-	if os == "windows" {
-		return '\\'
-	}
-	return '/'
-}