Add a Setting for whether or not we have been disabled by policy.

Bug: 62106274, 35698183
Test: StorageManager robotests
Merged-In: I1788d6143362130df88950c6843fa78b67182d5e
(cherry picked from commit da7332c0707094b66e9a2e22f4c64cf9520cfddb)
2 files changed