Add GRACE to the recipe check_obs

[remi-kazeroni]

I want to add the GRACE data to the recipe_check_list as a cmorizer was developed in #1694

Description

• Closes/Fixes: add GRACE data to recipe_check_obs #1962
• Link to documentation: doc/sphinx/source/input.rst

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Checklist

It is the responsibility of the author to make sure the PR is ready to review. The icons indicate whether the item will be subject to the 🛠 Technical or 🧪 Scientific review.

• 🛠 PR has a descriptive title for the changelog
• 🛠 Code follows the style guide
• 🛠 Documentation is available
• 🛠 YAML files pass pre-commit or yamllint checks
• 🛠 Circle/CI tests pass
• 🛠 Codacy code quality checks pass
• 🛠 Documentation builds successfully on readthedocs

New or updated recipe/diagnostic:

• 🛠 Provenance information has been added
• 🛠 New dependencies are added to the project requirements
• 🧪 Documentation for the recipe/diagnostic clearly describes what it calculates from a scientific point of view
• 🧪 Recipe runs successfully on @esmvalbot or some other machine without modification
• 🧪 Figure(s)/data look as expected
• 🧪 Code is well documented and scientifically sound

New or updated data reformatting script:

• 🛠 Dataset is added to the table in the documentation
• 🛠 Documentation contains instructions to obtain the data
• 🛠 Tests for the CMORized data are available
• 🧪 Numbers/units of the data look physically meaningful
• 🛠 Data set is added to the OBS data pool

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[hb326]

Looks ok to me. @axel-lauer what do you think?
But there is an error in the checks which you will have to fix, @remi-kazeroni, before we can merge this.

[remi-kazeroni]

But there is an error in the checks which you will have to fix, @remi-kazeroni, before we can merge this.
I think I need to merge the master branch once more to pass all checks.

[remi-kazeroni]

All green now but cmorizers are currently broken due to #1975. Probably better to wait for that to be fixed by #1994 to double check that the cmorizer runs and then merge this.

[bouweandela]

All green now but cmorizers are currently broken due to #1975. Probably better to wait for that to be fixed by #1994 to double check that the cmorizer runs and then merge this.

Things should work just fine with the released version of ESMValCore (v2.1).