UNIT TESTS: Ensuring mama_open and _close are called for IO tests
UNIT TESTS: Ensuring mama_open and _close are called for IO tests

Additional changes to setup and teardown functions for iotests to
ensure that mama_open() and mama_close() are correctly called before
and after each test.

MattMulhern/OpenMAMA,dmagOM/OpenMAMA-dynamic,MattMulhern/OpenMamaCassandra,MattMulhern/OpenMAMA,dmagOM/OpenMAMA-dynamic,philippreston/OpenMAMA,jacobraj/MAMA,fquinner/OpenMAMA,MattMulhern/OpenMAMA,cloudsmith-io/openmama,cloudsmith-io/openmama,dmagOM/OpenMAMA-dynamic,dpauls/OpenMAMA,cloudsmith-io/openmama,kuangtu/OpenMAMA,dmaguire/OpenMAMA,kuangtu/OpenMAMA,kuangtu/OpenMAMA,dmaguire/OpenMAMA,vulcanft/openmama,cloudsmith-io/openmama,MattMulhern/OpenMamaCassandra,dmaguire/OpenMAMA,cloudsmith-io/openmama,fquinner/OpenMAMA,jacobraj/MAMA,vulcanft/openmama,MattMulhern/OpenMamaCassandra,MattMulhern/OpenMAMA,MattMulhern/OpenMamaCassandra,kuangtu/OpenMAMA,dpauls/OpenMAMA,kuangtu/OpenMAMA,dmaguire/OpenMAMA,philippreston/OpenMAMA,MattMulhern/OpenMamaCassandra,vulcanft/openmama,cloudsmith-io/openmama,dmaguire/OpenMAMA,philippreston/OpenMAMA,vulcanft/openmama,jacobraj/MAMA,kuangtu/OpenMAMA,dmagOM/OpenMAMA-dynamic,dmagOM/OpenMAMA-dynamic,dmaguire/OpenMAMA,cloudsmith-io/openmama,jacobraj/MAMA,dpauls/OpenMAMA,dpauls/OpenMAMA,fquinner/OpenMAMA,philippreston/OpenMAMA,MattMulhern/OpenMAMA,MattMulhern/OpenMamaCassandra,fquinner/OpenMAMA,kuangtu/OpenMAMA,philippreston/OpenMAMA,MattMulhern/OpenMAMA,dmagOM/OpenMAMA-dynamic,jacobraj/MAMA,fquinner/OpenMAMA,dpauls/OpenMAMA,vulcanft/openmama,vulcanft/openmama,fquinner/OpenMAMA,jacobraj/MAMA,vulcanft/openmama,dpauls/OpenMAMA,MattMulhern/OpenMAMA,fquinner/OpenMAMA,dmaguire/OpenMAMA,dpauls/OpenMAMA,philippreston/OpenMAMA,philippreston/OpenMAMA