Support CNI 1.0.0

Fix #792

vendor/github.com/nxadm/tail/tail_posix.go

@@ -1,3 +1,4 @@
+// Copyright (c) 2019 FOSS contributors of https://github.com/nxadm/tail
 // +build !windows
 
 package tail
@@ -6,6 +7,11 @@ import (
 	"os"
 )
 
+// Deprecated: this function is only useful internally and, as such,
+// it will be removed from the API in a future major release.
+//
+// OpenFile proxies a os.Open call for a file so it can be correctly tailed
+// on POSIX and non-POSIX OSes like MS Windows.
 func OpenFile(name string) (file *os.File, err error) {
 	return os.Open(name)
 }