Fix AttributeError when running ec2_metadata_facts (#1138) (#1141)

[PR #1138/c269898a backport][stable-5] Fix AttributeError when running ec2_metadata_facts

This is a backport of PR #1138 as merged into main (c269898).
SUMMARY
Prior to 5.0.0 we caught "Exception" within fetch, this was limited to json.JSONDecodeError, however it looks like we also needed to catch AttributeError for non-dict JSON
ISSUE TYPE

Bugfix Pull Request

COMPONENT NAME
ec2_metadata_facts
ADDITIONAL INFORMATION
fixes: #1134

Reviewed-by: Mark Chappell <None>

changelogs/fragments/1134-ec2_metadata_facts-AttributeError.yml

@@ -0,0 +1,2 @@
+bugfixes:
+- ec2_metadata_facts - fixed ``AttributeError`` (https://github.com/ansible-collections/amazon.aws/issues/1134).

plugins/modules/ec2_metadata_facts.py

@@ -528,7 +528,7 @@ def fetch(self, uri, recurse=True):
                         self._data['%s' % (new_uri)] = content
                         for (key, value) in json_dict.items():
                             self._data['%s:%s' % (new_uri, key.lower())] = value
-                    except json.JSONDecodeError:
+                    except (json.JSONDecodeError, AttributeError):
                         self._data['%s' % (new_uri)] = content  # not a stringified JSON string
 
     def fix_invalid_varnames(self, data):