Enable read access to cgroups.json from shell

VTS tests require access to cgroups.json system and vendor files. Enable
read access to these files from shell.

Bug: 172868075
Test: vts_processgroup_validate_test
Signed-off-by: Suren Baghdasaryan <surenb@google.com>
Change-Id: I16ad13729e10c4e033499351761b163cad7cef34
1 file changed