CIDEVMI-1301 mflm flort dj sio dataset driver

@wfrench please review
flort dj sio has been updated for recent IDD changes.
This makes the assumption (based on a "probably" from Art) that the controller_timestamp in the IDD (which does not have a PD number yet) will be the sio_controller_timestamp defined for adcps_jln_sio_mule.
This also includes a small bug fix in sio_mule_common.py, and adds an additional option to creating sample data in the unit_test to not copy file metadata.