HFVHANDLER-202, add the testing at file to test NASA files when mem_cache is turned on.
HFVHANDLER-202, add the testing at file to test NASA files when mem_cache is turned on.

OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler,OPENDAP/hdf5_handler