ProcessTestLauncher: set timeout to 20 by default
ProcessTestLauncher: set timeout to 20 by default

Useful when tests are not generated from cmake

Change-Id: I17ffd47f371abc39c2edb61988a2a0fe86bc7f2a
Reviewed-on: http://gerrit.aldebaran.lan/64397
Tested-by: gerrit
Reviewed-by: dmerejkowsky <1e4b13000fa8777df4cefd2fd8215187e3deb062@aldebaran-robotics.com>

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