Feed "label for plots" through as an "alias" in ESMValTool recipe

[NParsonsMO]

Closes #298 .

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[mo-nikosbaltas]

This looks good. I run the tests and the metoffice workflow and all run correctly. I have not seen Acceptance Criteria in the #298 issue. I have seen comments on possible implementation, but as I understand at the moment this issue provides just the entries to 'alias' for both EVAL and REF. Is this sufficient?

[NParsonsMO]

This looks good. I run the tests and the metoffice workflow and all run correctly. I have not seen Acceptance Criteria in the #298 issue. I have seen comments on possible implementation, but as I understand at the moment this issue provides just the entries to 'alias' for both EVAL and REF. Is this sufficient?

I believe it is, as it needs to be combined with a separate PR on the ESMValTool repo to actually see any difference, but good to check with @alistairsellar or @ehogan. I'll ask for a second reviewer tomorrow.

[mo-nikosbaltas]

I will wait for comments by @alistairsellar and @ehogan and then I can approve.