Stephen Ma 0694fbc7a9 Don't open subdirectories rootwrap filter directories
A rootwrap filter directory may contain subdirectories. The rootwrap
daemon will crash when it tries to load filters from subdirectories.
So subdirectories should be skipped.

Change-Id: I4f618734300bf5eb81282fbf8fc213f995a4fe59
2017-02-28 04:34:00 -08:00
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