Change pm.dexopt.priv-apps to .priv-apps-oob

Other than the renaming, the meaning is now opposite.

(cherry-picked from aosp/533101)

Test: build
Bug: 67415855
Bug: 63920015

Change-Id: I349c0b233079b5958e4a308d6c7ad9b3a54f157a
(cherry picked from commit 66a285d9)