Ignore "pool exists" error on Azure Batch

[adamrtalbot]

New feature

If you submit an Azure Batch pipeline which tries to create a pool when the pool already exists, you get the following error:

Caused by:
  Status code 409, "{
    "odata.metadata":"https://mybatch.eastus.batch.azure.com/$metadata#Microsoft.Azure.Batch.Protocol.Entities.Container.errors/@Element","code":"PoolExists","message":{
      "lang":"en-US","value":"The specified pool already exists.\nRequestId:d9475bc1-f9e5-492b-9114-6a05a8a57abc\nTime:2025-01-23T14:15:51.6526349Z"
    }
  }"

We can just ignore this error since the pool is being created.

Usage scenario

Related to #5575

Suggest implementation

We can add the code here:

nextflow/plugins/nf-azure/src/main/nextflow/cloud/azure/batch/AzBatchService.groovy

Line 926 in 19c40a4

final private static List<Integer> RETRY_CODES = List.of(408, 429, 500, 502, 503, 504)

or an explicit exception here:

nextflow/plugins/nf-azure/src/main/nextflow/cloud/azure/batch/AzBatchService.groovy

Lines 935 to 947 in 19c40a4

	protected <T> T apply(CheckedSupplier<T> action) {
	// define the retry condition
	final cond = new Predicate<? extends Throwable>() {
	@Override
	boolean test(Throwable t) {
	if( t instanceof HttpResponseException && t.response.statusCode in RETRY_CODES )
	return true
	if( t instanceof IOException || t.cause instanceof IOException )
	return true
	if( t instanceof TimeoutException || t.cause instanceof TimeoutException )
	return true
	return false
	}