Modify ThreadInfoTest.Renew to avoid side effects on other tests
Modify ThreadInfoTest.Renew to avoid side effects on other tests

Calling OMP_NUM_THREADS=1 ./runBiodynamoTestsMain on opladev47
crashed the following tests:

MechanicalInteraction.NotStraightCylinderGrowthObstacle
MechanicalInteraction.BifurcateCylinderRandomGrowth
MechanicalInteraction.TwoDistinctCylinderEncounter
MechanicalInteraction.TwoCylinderGrowthObstacle
NeuriteElementBehaviour.StraightxCylinderGrowthRetract
NeuriteElementBehaviour.BranchingGrowth

Running with all threads was fine.

BioDynaMo/biodynamo,BioDynaMo/biodynamo,BioDynaMo/biodynamo,BioDynaMo/biodynamo