ESM1.6 qa checks for io_layout

[blimlim]

Closes #133.

This PR updates the QA tests for ESM1.6. Previously, the test_mppnccombine_fast_collate_exe test checked that the collation executable and mpi setting were correctly set.

ACCESS-NRI/access-esm1.6-configs#55 removed collation for the configuration, and set io_layout=1,1 in the ocean input.nml file. These two changes are linked, and are required to go together (i.e. switching off collation only makes sense if you have io_layout=1,1. Because of this, I've modified the tests to check that collation is disabled and correct io_layout is set.

Any feedback or suggestions are very welcome!

[codecov]

Codecov Report

Attention: Patch coverage is 21.73913% with 18 lines in your changes missing coverage. Please review.

Project coverage is 74.17%. Comparing base (4c4de2d) to head (2dce9f0).
Report is 6 commits behind head on main.

Files with missing lines	Patch %	Lines
...model_config_tests/qa/test_access_esm1p6_config.py	21.73%	18 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #134      +/-   ##
==========================================
- Coverage   75.18%   74.17%   -1.01%     
==========================================
  Files          18       18              
  Lines         927      945      +18     
==========================================
+ Hits          697      701       +4     
- Misses        230      244      +14     

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[dougiesquire]

Thanks @blimlim! Sorry for taking so long - got sucked into a meeting

[blimlim]

Thanks @dougiesquire and not a problem at all! Good point with the str(i) change. From what I can tell, I think I need to keep the explicit check that ["collation"]["enable"] is False. I could add an extra check to make sure the [enable] flag is present too. Let me know what you think!

[dougiesquire]

Thanks @blimlim!