Use 'auto' for Azure managed identity automatic keyword

Signed-off-by: adamrtalbot <12817534+adamrtalbot@users.noreply.github.com>

Author: adamrtalbot

plugins/nf-azure/src/main/nextflow/cloud/azure/fusion/AzFusionEnv.groovy

@@ -68,7 +68,7 @@ class AzFusionEnv implements FusionEnv {
             // We recommend explicitly setting the config item to the managed ID so you know which one is being used.
             // However if set to 'true' it will use whichever is available.
             // This can be helpful if the pools have different managed identities.
-            if (managedIdentityId != 'true') {
+            if (managedIdentityId != 'auto') {
                 result.FUSION_AZ_MSI_CLIENT_ID = managedIdentityId
             }
             // No SAS token is added or generated

plugins/nf-azure/src/test/nextflow/cloud/azure/fusion/AzFusionEnvTest.groovy

@@ -249,7 +249,7 @@ class AzFusionEnvTest extends Specification {
         Global.session = Mock(Session) {
             getConfig() >> [azure: [
                 storage: [accountName: NAME],
-                batch: [poolIdentityClientId: 'true']
+                batch: [poolIdentityClientId: 'auto']
             ]]
         }