Attributes compat (#75563)

* ignore attributes in output

* ignore 'attributes' for json dump

* actually add file

* clog

* sometimtes its not a dict

* always ignore

* also allow validation to work on newer modules

* remove attributes doc

  let existing overrides display, wont be full info but still pertinent info
  though user will have to check newer versions

changelogs/fragments/attributes_compat.yml

@@ -0,0 +1,2 @@
+bugfixes:
+  - make previous versions compatible we new attributres w/o implementing them.

lib/ansible/cli/doc.py

@@ -334,6 +334,7 @@ class DocCLI(CLI, RoleMixin):
 
     # default ignore list for detailed views
     IGNORE = ('module', 'docuri', 'version_added', 'short_description', 'now_date', 'plainexamples', 'returndocs', 'collection')
+    JSON_IGNORE = ('attributes',)
 
     # Warning: If you add more elements here, you also need to add it to the docsite build (in the
     # ansible-community/antsibull repo)
@@ -686,6 +687,12 @@ class DocCLI(CLI, RoleMixin):
                 docs = self._get_plugins_docs(plugin_type, loader)
 
         if do_json:
+            for entry in docs.keys():
+                for forbid in DocCLI.JSON_IGNORE:
+                    try:
+                        del docs[entry]['doc'][forbid]
+                    except (KeyError, TypeError):
+                        pass
             jdump(docs)
         else:
             text = []

lib/ansible/plugins/doc_fragments/action_common_attributes.py

@@ -0,0 +1,18 @@
+# -*- coding: utf-8 -*-
+
+# Copyright: Ansible Project
+# GNU General Public License v3.0+ (see COPYING or https://www.gnu.org/licenses/gpl-3.0.txt)
+from __future__ import (absolute_import, division, print_function)
+__metaclass__ = type
+
+
+# NOTE: this file is here to allow modules using the new attributes feature to
+#       work w/o errors in this version of ansible, it does NOT provide the full
+#       attributes feature, just a shim to avoid the fragment not being found.
+
+class ModuleDocFragment(object):
+
+    # Standard documentation fragment
+    DOCUMENTATION = r'''
+options: {}
+'''

test/lib/ansible_test/_data/sanity/validate-modules/validate_modules/schema.py

@@ -505,6 +505,7 @@ def doc_schema(module_name, for_collection=False, deprecated_module=False):
         'options': Any(None, *list_dict_option_schema(for_collection)),
         'extends_documentation_fragment': Any(list_string_types, *string_types),
         'version_added_collection': collection_name,
+        'attributes': object,
     }
 
     if for_collection: