LU-248 increase LOV reseed to mitigate OST allocation inconsitence

LU-248 increase LOV reseed to mitigate OST allocation inconsitence

in lov_qos.c, increase the LOV_CREATE_RESEED_MULT and
LOV_CREATE_RESEED_MIN to increase the LOV reseed window
to mitigate the inconsistence issue of OST allocation

Change-Id: I7e44b9cf23e4ade1fb99a4f5f3537f3c26dece94
Signed-off-by: Hongchao Zhang <hongchao.zhang@whamcloud.com>
Reviewed-on: http://review.whamcloud.com/549
Tested-by: Hudson
Reviewed-by: Andreas Dilger <adilger@whamcloud.com>
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: Johann Lombardi <johann@whamcloud.com>