Add user cros-disks to group android-everybody

This allows cros-disks to access 'Play Files'.

BUG=chromium:996549
TEST=Manually built and inspected group file

Cq-Depend: chromium:2040633
Change-Id: Ieac2e761ff437fd9d5f340d187436f0272729cdd
Reviewed-on: https://chromium-review.googlesource.com/c/chromiumos/overlays/eclass-overlay/+/2032906
Commit-Queue: François Degros <fdegros@chromium.org>
Tested-by: François Degros <fdegros@chromium.org>
Reviewed-by: Mike Frysinger <vapier@chromium.org>
diff --git a/profiles/base/accounts/group/android-everybody b/profiles/base/accounts/group/android-everybody
index 80c224b..c075b2d 100644
--- a/profiles/base/accounts/group/android-everybody
+++ b/profiles/base/accounts/group/android-everybody
@@ -2,4 +2,4 @@
 # This gid is converted to 9997(everybody) inside Android container by
 # subtracting 655360.
 gid:665357
-users:chronos,seneschal
+users:chronos,cros-disks,seneschal