fix test runner race conditions
fix test runner race conditions

Change-Id: If42da80d7a3751bc38deaf248865e6c6f4a123a3
Reviewed-on: http://gerrit.aldebaran.lan/52418
Tested-by: gerrit
Reviewed-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>

dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,dmerejkowsky/qibuild,aldebaran/qibuild,aldebaran/qibuild,dmerejkowsky/qibuild