Instead of creating a "0.0" subdirectory and migrating graphroot
metadata into it when user namespaces are available in the daemon
(currently only in experimental), change the graphroot dir permissions
to only include the execute bit for "other" users.
This allows easy migration to and from user namespaces and will allow
easier integration of user namespace support into the master build.
Docker-DCO-1.1-Signed-off-by: Phil Estes <estesp@linux.vnet.ibm.com> (github: estesp)
Upstream-commit: e8532023f20498e6eb1ce5c079dc8a09aeae3061
Component: engine
647bd6865a