Fix the missing labels field in Job request for Google Batch

[zetxqx]

This change will add the missing labels to Batch Job request.
Without some of the labels, some Batch side optimization is not recognized.

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[bentsherman]

@zetxqx do you think we should still add these labels to the allocation policy?

nextflow/plugins/nf-google/src/main/nextflow/cloud/google/batch/GoogleBatchTaskHandler.groovy

Line 337 in 5a3a0fa

allocationPolicy.putAllLabels(task.config.getResourceLabels())

I'm guessing they are both useful as one is for the job metadata and the other is for the physical resources.

[zetxqx]

Yep, there are still some labels valuable for allocationPolicy, we might need to expose more fields on the NextFlow side as well. Currently, this is a comprimised solution not breaking things. Will make more change after I understand the nextFlow code base better.

[bentsherman]

Sure, feel free to ping me if you have questions about the codebase