Fix getting len() attr from boolean values

Address the issue by ensuring that the boolean value of extra
specs or metadata being read are from string type. If they are
not, we convert them before getting the length.

Closes-Bug: #2004165
Change-Id: I96c7a6bf862ad81ed756f16f0c398ce68bcf5e66

manila_ui/dashboards/utils.py

@@ -86,6 +86,7 @@ def metadata_to_str(metadata, meta_visible_limit=4, text_length_limit=25):
         if len(k) > text_length_limit:
             k_shortenned = k[:text_length_limit] + '...'
         v = metadata[k]
+        v = v if isinstance(v, str) else str(v)
         if len(v) > text_length_limit:
             v = v[:text_length_limit] + '...'
         meta.append("%s = %s" % (html_escape(k_shortenned), html_escape(v)))

releasenotes/notes/bug-2004165-fix-type-listing-when-rbac-enabled-c01f363dfa574b9b.yaml

@@ -0,0 +1,6 @@
+---
+fixes:
+  - |
+    Fixed an issue while trying to load share types that had boolean extra
+    specs when RBAC was enabled. For more details, please refer to
+    `Launchpad bug <https://bugs.launchpad.net/manila-ui/+bug/2004165>`_