Adding initial Met Office configuration for VerPy database and plotti…

[RachelNorth]

…ng capability

Adds configuration and modifications needed to run the VerPy database creation and plotting (of METplus verification results) at the Met Office. As part of #2133.

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• Documentation has been updated to reflect change.
• New code has tests, and affected old tests have been updated.
• All tests and CI checks pass.
• Ensured the pull request title is descriptive.
• Ensure rose-suite.conf.example has been updated if new diagnostic added.
• Conda lock files have been updated if dependencies have changed.
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[github-actions]

[mo-tomosevans]

Hi, having pulled this PR for testing - I've had an issue with the change in verpy_plot/opt/rose-app-metoffice.conf.
Running with EXPID='METO_UKV' gives a verpy plotting error. Replacing this with EXPID=METO_UKV (removing quotes) works.
Creating an empty rose-app-metoffice.conf file (like niwa implementation) also doesn't work.

[JorgeBornemann (JorgeBornemann)]

Hi, having pulled this PR for testing - I've had an issue with the change in verpy_plot/opt/rose-app-metoffice.conf. Running with EXPID='METO_UKV' gives a verpy plotting error. Replacing this with EXPID=METO_UKV (removing quotes) works. Creating an empty rose-app-metoffice.conf file (like niwa implementation) also doesn't work.

Hi mo-tomosevans , This will be resolved in #2103, where EXPID (or rather EXPIDS) will be taken from the model names defined for the whole workflow via the rose gui. This will provide consistency between the CSET diagnostics and the METPlus/VerPy output.

[JorgeBornemann (JorgeBornemann)]

All good.

Reflecting here what we discussed in person that the optional configurations in the metplus_ascii2nc app go in the main CSET repository rather than the restricted files, because they are unlikely to have any site-sensitive information.

Also noting that some of the changes will benefit other sites rather than Met Office.

[JorgeBornemann (JorgeBornemann)]

The METPLUS_OPT_CONFIG_KEYS environment configuration is likely to be redundant, as it should not be using this file if it was no already metoffice, but is also harmless.