autorun: allow pass configuration file path

Allow to pass configuration file as first parameter with
fallback to previous behaviour where config file is read
from home directory.

Signed-off-by: Pawel Piatek <pawelx.piatek@intel.com>
Change-Id: I45972b04fe5fc978bf3b2bede45aae363be3069c
Reviewed-on: https://review.spdk.io/gerrit/c/spdk/spdk/+/6361


Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Maciej Wawryk <maciejx.wawryk@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-by: Michal Berger <michalx.berger@intel.com>
Reviewed-by: Tomasz Zawadzki <tomasz.zawadzki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Community-CI: Mellanox Build Bot