Parse NCI filepaths to THREDDS location

[Ariana-B]

As per #520

---

📚 Documentation preview 📚: https://datacube-explorer--523.org.readthedocs.build/en/523/

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 42.85714% with 4 lines in your changes are missing coverage. Please review.

Project coverage is 86.24%. Comparing base (aa0d9f3) to head (358fe01). Report is 4 commits behind head on develop.

:exclamation: Current head 358fe01 differs from pull request most recent head d6ffbd7. Consider uploading reports for the commit d6ffbd7 to get more accurate results

Files	Patch %	Lines
cubedash/_utils.py	42.85%	4 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #523      +/-   ##
===========================================
- Coverage    86.29%   86.24%   -0.05%     
===========================================
  Files           26       26              
  Lines         3451     3461      +10     
===========================================
+ Hits          2978     2985       +7     
- Misses         473      476       +3     

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[mpaget]

an opt-in/configurable option

Yes, I expect this would be good to have configurable by a deployment admin. Sharing some ideas, if helpful.

If URL converting regexs or functions were imported from settings.env.py we'd need to consider the security implications and do some careful vetting. I'm not sure of the effort or appetite to look at it from that perspective. A transparent in-code solution would be easier.

As a deployment patch perhaps? Perhaps settings.env.py could reference an as_external_url function that can be imported by explorer, else the "s3" default is used. The custom as_external_url function would need to be uploaded to the host running explorer. This may require an update to the explorer chart too.

[whatnick]

Could we please update this to latest develop to avoid potential merge with rebase issues, especially if global settings are being changed. This will affect the main file where the timezone setting was recently added.