feature/gfid-access: Always send setattr down in overloaded setxattr.

Problem: File ownership is not being preserved for root in geo-rep
         mountbroker setup.

Analysis and Cause:
         Entry creations for geo-rep is overloaded in ga_setxattr.
         It happens in two phase, entry creation followed by setattr
         to preserve ownership as in master.

         If uid and gid of file being synced is root, setattr was
         not being sent down. Since, the file creation happens with
         non-root user in mountborker geo-rep setup, if setattr is
         not done explicitly, file ownership is not preserved for root.

Solution:
         Always pass setattr down in overloaded ga_setxattr.

BUG: 1159213
Change-Id: I0a6ef16333190b069e2ae326721d2b983f6a1a44
Reviewed-on: http://review.gluster.org/9051
Signed-off-by: Kotresh HR <khiremat@redhat.com>
Reviewed-on: http://review.gluster.org/9083
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Venky Shankar <vshankar@redhat.com>
Tested-by: Venky Shankar <vshankar@redhat.com>