PYTHON-952 - Make tests more predictable
PYTHON-952 - Make tests more predictable

ShaneHarvey/mongo-python-driver,mongodb/mongo-python-driver,WingGao/mongo-python-driver,felixonmars/mongo-python-driver,WingGao/mongo-python-driver,pigate/mongo-python-driver,ramnes/mongo-python-driver,develf/mongo-python-driver,ramnes/mongo-python-driver,develf/mongo-python-driver,ShaneHarvey/mongo-python-driver,aherlihy/mongo-python-driver,ShaneHarvey/mongo-python-driver,felixonmars/mongo-python-driver,aherlihy/mongo-python-driver,aherlihy/mongo-python-driver,pigate/mongo-python-driver,ramnes/mongo-python-driver,mongodb/mongo-python-driver,mongodb/mongo-python-driver