Added input file sorting to many diagnostic to make output exactly reproducible #2710
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Description
The exact output of many diagnostics depends on the order in which input files are read, which can vary between runs (e.g., 1D netcdf files with
dataset
coordinate whose order depends on the order of the input files). This makes the output non-reproducible and lets tools to check differences between the output fail (see #2704).This PR adds sorting to many of these diagnostics to make them reproducible.
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