gmscore_app: anr_data_file permissions

More historical context in http://b/18504118

This also adds an auditallow to the same rule for priv_app, so we can
delete it once no logs show up in go/sedenials for this rule
triggering.

Bug: 142672293
Test: TH
Change-Id: I5729b89af83090e6e31c012c8acb0f0114c87d3d
2 files changed