Fix indentations, rework help message, parametrize VM image.
Change-Id: I4a24c840ae2fec1e77c0e53e2ef6dc227272744b
Signed-off-by: Pawel Wodkowski <pawelx.wodkowski@intel.com>
Reviewed-on: https://review.gerrithub.io/387138
Tested-by: SPDK Automated Test System <sys_sgsw@intel.com>
Reviewed-by: Karol Latecki <karol.latecki@intel.com>
Reviewed-by: Jim Harris <james.r.harris@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>