As a side effect, commit ec50aa5180 ("Allow the init and apexd
processes to read all block device properties") removed permission for
the shell context to list the /sys/class/block directory. There is a
CTS test that relies on this (CtsNativeEncryptionTestCases), so grant
permission to do this again.
Bug: 196521739
Bug: 194450129
Test: Before this change, 'adb shell ls /sys/class/block' fails.
After this change, 'adb shell ls /sys/class/block' succeeds.
Change-Id: I87cb90880f927db1385887b35c84f4dd7f95021b
Merged-In: I87cb90880f927db1385887b35c84f4dd7f95021b
ff53c4d16e