quota: use copy_frame when creating new frame during quota_check_limit

quota: use copy_frame when creating new frame during quota_check_limit

DHT re-balance, sets frame root PID < 0 and quota_check_limit skips
enforcement if this PID is less than 0.

When creating new frame for quota_check_limit we need to use
copy_frame instead of create_frame, so that all auth information
are copied from original frame.

Change-Id: Ib3b4a3744f8b0d72a8bc32826f6edae836d6faed
BUG: 1267812
Signed-off-by: vmallika <vmallika@redhat.com>
Reviewed-on: http://review.gluster.org/12265
Tested-by: NetBSD Build System <jenkins@build.gluster.org>
Tested-by: Gluster Build System <jenkins@build.gluster.com>
Reviewed-by: Raghavendra G <rgowdapp@redhat.com>