Changes in NWC SAF GEO v2021 data

[pnuu]

Feature Request

Is your feature request related to a problem? Please describe.
There are some changes in the files produced by the NWC SAF GEO v2021 compared to v2018. These are the ones I've noticed on the files I now use:

• ASII-TF
  • asii_turb_trop_prob -> asiitf_prob
• ASII-GW
  • asii_turb_wave_prob -> asiigw_wv_prob

Describe the solution you'd like
Make it so also the new files work.

Describe any changes to existing user workflow
The variable names will change from v2018 to v2021.

Additional context
The old variable names could be mapped to the new ones so that user would not need to change anything, but this would go against our "use the naming in the data" principle.

[pnuu]

There is also this warning: Required file type 'nc_nwcsaf_crr-ph' not found or loaded for 'crrph_intensity' and the data are not read. This must've been missed in #2652 by me.