--skip-alias is not supported in all versions of which.
While here, explicitly import CalledProcessError - some
versions of Python didn't seem to mind, but it's not
true for all versions. Also print related error
messages to stderr instead of stdout - this helps
with debugging since in some tests the stdout is
redirected to a file.
Signed-off-by: Jim Harris <james.r.harris@intel.com>
Change-Id: I7637adc36da6290ece28c77b3398185191347eef
Reviewed-on: https://review.gerrithub.io/423414
Tested-by: SPDK CI Jenkins <sys_sgci@intel.com>
Reviewed-by: Ben Walker <benjamin.walker@intel.com>
Reviewed-by: Shuhei Matsumoto <shuhei.matsumoto.xt@hitachi.com>
Chandler-Test-Pool: SPDK Automated Test System <sys_sgsw@intel.com>
92861ff5f8