test: make test more resilient

During manual cleanup of unused resources, the storage account can get
removed. The current storage account is not possible to remove
mannually, but adding this check to make it more resielient in future
scenarios.

test/cases/azure.sh

@@ -178,6 +178,17 @@ name = "cloud-init"
 enabled = ["sshd", "cloud-init", "cloud-init-local", "cloud-config", "cloud-final"]
 EOF
 
+# Make sure the specified storage account exists
+if [ "$(az resource list --name "$AZURE_STORAGE_ACCOUNT")" == "[]" ]; then
+	echo "The storage account ${AZURE_STORAGE_ACCOUNT} was removed!"
+	az storage account create \
+		--name "${AZURE_STORAGE_ACCOUNT}" \
+		--resource-group "${AZURE_RESOURCE_GROUP}" \
+		--location  "${AZURE_LOCATION}" \
+		--sku Standard_RAGRS \
+		--kind StorageV2
+fi
+
 # Prepare the blueprint for the compose.
 greenprint "📋 Preparing blueprint"
 sudo composer-cli blueprints push "$BLUEPRINT_FILE"