Harvest new PO.DAAC data for TOPVOYS

[aperrin66]

Make it possible to harvest the data from the following folders hosted by PO.DAAC:

• [x] https://opendap.jpl.nasa.gov/opendap/OceanTemperature/ghrsst/data/GDS2/L3U/AMSR2/REMSS/v8a/
• [x] https://opendap.jpl.nasa.gov/opendap/OceanTemperature/ghrsst/data/GDS2/L3U/GMI/REMSS/v8.2a/
• [x] https://opendap.jpl.nasa.gov/opendap/hyrax/OceanTemperature/ghrsst/data/GDS2/L3C/AMERICAS/GOES16/STAR/v2.70/
• [x] https://opendap.jpl.nasa.gov/opendap/hyrax/OceanTemperature/ghrsst/data/GDS2/L3C/AMERICAS/GOES17/STAR/v2.71/
• [x] https://opendap.jpl.nasa.gov/opendap/OceanTemperature/ghrsst/data/GDS2/L3C/GLOB/AVHRR_SST_METOP_B_GLB/OSISAF/v1/
• [x] https://opendap.jpl.nasa.gov/opendap/hyrax/OceanTemperature/ghrsst/data/GDS2/L3C/ATLANTIC/SEVIRI/OSISAF/v1/
• [x] https://opendap.jpl.nasa.gov/opendap/hyrax/OceanTemperature/ghrsst/data/GDS2/L3C/Indian-Ocean/SEVIRI_IO/OSISAF/v1.0/

[aperrin66]

There are minor issues to deal with in metanorm (platform names) and django-geo-spaas (URL field too short).