client: refresh snapdir attrs on parent inode updation

client: refresh snapdir attrs on parent inode updation

Snapdir attrs (ui, gid, etc..) are set its respective parent attributes,
however, those are never updated when the attributes of the parent inode
get updated. There seems to be no reason to no to update snapdir attributes.

This change also updates POSIX ACLs.

Fixes: http://tracker.ceph.com/issues/57084
Signed-off-by: Venky Shankar <vshankar@redhat.com>
(cherry picked from commit 794c74cebd9ecbd82e7431f424af8f631b75de89)

 Conflicts:
	src/client/Client.cc

Adjust for fscrypt related changes.