use managed identity reader access for scaleset configs (#1060)

src/api-service/__app__/onefuzzlib/azure/containers.py

@@ -217,6 +217,15 @@ def get_container_sas_url(
     )
 
 
+def get_file_url(container: Container, name: str, storage_type: StorageType) -> str:
+    client = find_container(container, storage_type)
+    if not client:
+        raise Exception("unable to find container: %s - %s" % (container, storage_type))
+
+    # get_url has a trailing '/'
+    return f"{get_url(client.account_name)}{container}/{name}"
+
+
 def get_file_sas_url(
     container: Container,
     name: str,

src/api-service/__app__/onefuzzlib/azure/vmss.py

@@ -212,6 +212,7 @@ def update_extensions(name: UUID, extensions: List[Any]) -> None:
         str(name),
         {"virtual_machine_profile": {"extension_profile": {"extensions": extensions}}},
     )
+    logging.info("VM extensions updated: %s", name)
 
 
 def create_vmss(