Geocoding fixes for #6752 and #6758

Addresses the following issues:

- dplaingestion.akamod.geocode was not working when geopy was more recent than 0.95.1 (#6752)
- Forcibly "geocoded" for regions in SCDL records were not being assigned the coordinates in the proper format (#6758) - this also was the cause of the SCDL records not being added properly.

assigning to @migbot; cc @markbreedlove.