pack/pixz: fix failed to run pixz on local clear

fix the following issue
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sh: pixz: command not found
------

the root cause is lkp install dont' make & install pixz, since pack/pixz is not
an executable yaml.
------
try_run()
{
	local subdir="$1"
	local path="$LKP_SRC/$subdir/$lkp_command"
	shift

	[ -x "$path" ] && exec "$path" $lkp_args "$@"
}
------

pixz runs well on local clear now.
------
root@clear-lkp-30040/lkp/result/pixz/100%/clear-lkp/clear-linux-os/x86_64-rhel-7.6/gcc-7/5.1.12-357.kvm/3 # cat pixz.json
{
  "pixz.throughput": [
    15801684.983846422
  ]
}
------

Signed-off-by: Liu Yiding <yidingx.liu@intel.com>
Signed-off-by: Philip Li <philip.li@intel.com>

1 files changed, 0 insertions, 0 deletions

diff --git a/pack/pixz b/pack/pixz
index c135b6f4..c135b6f4 100644..100755
--- a/pack/pixz
+++ b/pack/pixz