Convert AMSR2-REMSS-L2P-v8a to forge-py

[jamesfwood]

Some granules look weird in forge, so should convert this collection to forge-py

Like these:
20210719065250-REMSS-L2P_GHRSST-SSTsubskin-AMSR2-L2B_rt_r48780-v02.0-fv01.0.nc
20210624065849-REMSS-L2P_GHRSST-SSTsubskin-AMSR2-L2B_rt_r48416-v02.0-fv01.0.nc

Came from this:
https://jira.jpl.nasa.gov/browse/PODAAC-4039