Add NWC SAF GEO v2021 ASIIF-TF and ASII-GW dataset names

[pnuu]

In NWC SAF GEO v2021 some of the dataset names inside the files have changed. This PR adds those. The old names in v2018 files are kept as-is, so the users need to migrate to the new ones.

Also some missing dataset names were added to silence few warnings.

• Closes Changes in NWC SAF GEO v2021 data #2672

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (fbe017c) 95.31% compared to head (fe50d42) 95.30%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2673      +/-   ##
==========================================
- Coverage   95.31%   95.30%   -0.02%     
==========================================
  Files         371      371              
  Lines       52435    52435              
==========================================
- Hits        49980    49971       -9     
- Misses       2455     2464       +9     

Flag	Coverage Δ
behaviourtests	4.16% <ø> (-0.01%)	⬇️
unittests	95.91% <ø> (-0.02%)	⬇️

Flags with carried forward coverage won't be shown. Click here to find out more.

☔ View full report in Codecov by Sentry.
📢 Have feedback on the report? Share it here.

[coveralls]

Pull Request Test Coverage Report for Build 7168308574

Warning: This coverage report may be inaccurate.

We've detected an issue with your CI configuration that might affect the accuracy of this pull request's coverage report.
To ensure accuracy in future PRs, please see these guidelines.
A quick fix for this PR: rebase it; your next report should be accurate.

• 0 of 0 changed or added relevant lines in 0 files are covered.
• No unchanged relevant lines lost coverage.
• Overall coverage remained the same at 95.886%

---

Totals
Change from base Build 7106990647:	0.0%
Covered Lines:	50108
Relevant Lines:	52258

---

💛 - Coveralls

[mraspaud]

A couple of questions, otherwise lgtm