LU-4065 tests: hsm copytool_cleanup improvement

LU-4065 tests: hsm copytool_cleanup improvement

hsm shutdown from copytool_cleanup could race with
cdt_set_mount_state enabled. Because set_param -P
doesn't wait when configuration "params" will be
retrieved and applied from server.

Xyratex-bug-id: MRP-2037
Change-Id: I2f274c933986439deae04cd252b4dd9c8442ef1f
Signed-off-by: Sergey Cheremencev <sergey.cheremencev@seagate.com>
Reviewed-on: http://review.whamcloud.com/12783
Tested-by: Jenkins
Tested-by: Maloo <hpdd-maloo@intel.com>
Reviewed-by: Andreas Dilger <andreas.dilger@intel.com>
Reviewed-by: John L. Hammond <john.hammond@intel.com>
Reviewed-by: Oleg Drokin <oleg.drokin@intel.com>