staging: lustre: ldlm: reduce ldlm pool recalc window

Reduce the sleep period from 50 seconds down to
LDLM_POOL_CLI_DEF_RECALC_PERIOD which is 10 seconds.

Signed-off-by: Vitaly Fertman <vitaly_fertman@xyratex.com>
Intel-bug-id: https://jira.hpdd.intel.com/browse/LU-3031


Xyratex-bug-id: MRP-395 MRP-1366 MRP-1366
Reviewed-by: Andriy Skulysh <Andriy_Skulysh@xyratex.com>
Reviewed-by: Alexey Lyashkov <Alexey_Lyashkov@xyratex.com>
Reviewed-on: http://review.whamcloud.com/5843


Reviewed-by: James Simmons <uja.ornl@yahoo.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>
Signed-off-by: James Simmons <jsimmons@infradead.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>