Re-implement some changes that were dropped when #5042 was merged

[adamrtalbot]

Some changes were dropped when @swampie's PR was merged. This PR re-adds them from scratch, will try and trim it down so we retain the relevant lines.

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[pditommaso]

Can be added an integration tests here

nextflow/validation/azure.sh

Lines 57 to 65 in 658566e

	NXF_CLOUDCACHE_PATH=az://my-data/cache \
	$NXF_CMD -C ./azure.config \
	run nextflow-io/rnaseq-nf \
	-with-report \
	-with-trace $OPTS \
	-plugins nf-cloudcache \
	-resume
	[[ `grep -c 'Using Nextflow cache factory: nextflow.cache.CloudCacheFactory' .nextflow.log` == 1 ]] || false
	[[ `grep -c 'Cached process > ' .nextflow.log` == 4 ]] || false

[adamrtalbot]

Can be added an integration tests here

nextflow/validation/azure.sh

Lines 57 to 65 in 658566e

	NXF_CLOUDCACHE_PATH=az://my-data/cache \
	$NXF_CMD -C ./azure.config \
	run nextflow-io/rnaseq-nf \
	-with-report \
	-with-trace $OPTS \
	-plugins nf-cloudcache \
	-resume
	[[ `grep -c 'Using Nextflow cache factory: nextflow.cache.CloudCacheFactory' .nextflow.log` == 1 ]] || false
	[[ `grep -c 'Cached process > ' .nextflow.log` == 4 ]] || false

I think you have to run on a machine with a Managed Identity, which basically means on an Azure VM. I can expand some integration tests there though.

[pditommaso]

Merge manually 306814e