Expand access to gatekeeperd.

This enables access to gatekeeperd for anybody who invokes Android
framework APIs. This is necessary because the AndroidKeyStore
abstraction offered by the framework API occasionally communicates
with gatekeeperd from the calling process.

(cherry picked from commit effcac7d7eddded5fa31d294dfe3fd1757de51c7)

Bug: 20526234
Change-Id: I450242cd085259b3f82f36f359ee65ff27bebd13
3 files changed