Fix CI: cloud entry in ObjectStoreTypeSpan messages, typed fake provider

ObjectStoreTypeSpan.vue indexes an exhaustive record over the template
type enum, so it needs a message for the new cloud type. The paging
fake's SimpleNamespace provider gets a cast for mypy - only the
result-limit config is consulted by ClientPagedResultList.

Author: nuwang

client/src/components/ObjectStore/ObjectStoreTypeSpan.vue

@@ -9,6 +9,7 @@ const MESSAGES = {
         "This is a Microsoft Azure Blob based Galaxy storage. More information on Microsoft's Azure Blob Storage can be found at https://azure.microsoft.com/en-us/products/storage/blobs/.",
     disk: "This is a simple path based Galaxy storage that assumes the all the relevant paths are already mounted on the Galaxy server and target worker nodes.",
     boto3: "This is a Galaxy storage based on the Amazon Simple Storage Service (S3) interface, but likely not stored by Amazon. The AWS interface has become an industry standard and many storage vendors support it and use it to expose object based storage.",
+    cloud: "This is a Galaxy storage based on the provider-agnostic CloudBridge library, which can store data in Amazon S3, Azure Blob Storage, Google Cloud Storage, or OpenStack Swift.",
     generic_s3:
         "This is a Galaxy storage based on the Amazon Simple Storage Service (S3) interface, but likely not stored by Amazon. The AWS interface has become an industry standard and many storage vendors support it and use it to expose object based storage.",
     onedata: "This is a Galaxy storage based on the Onedata system.",

test/unit/objectstore/test_objectstore.py

@@ -1095,11 +1095,17 @@ class the AWS provider uses), so code that only consumes the first page
 
     def __init__(self, keys, page_size=1):
         from types import SimpleNamespace
+        from typing import (
+            Any,
+            cast,
+        )
 
         from cloudbridge.base.resources import BasePageableObjectMixin
 
         self._keys = keys
-        provider = SimpleNamespace(config=SimpleNamespace(default_result_limit=page_size))
+        # Duck-typed stand-in for a cloudbridge provider; only the result-limit
+        # config is consulted by ClientPagedResultList.
+        provider = cast(Any, SimpleNamespace(config=SimpleNamespace(default_result_limit=page_size)))
 
         class _Container(BasePageableObjectMixin):
             def list(self, limit=None, marker=None, prefix=None):