Doc fragments to plugins (#50172)

* promote doc_fragments into actual plugins

  change tests hardcoded path to doc fragments
  avoid sanity in fragments
  avoid improper testing of doc_fragments
  also change runner paths
 fix botmeta
 updated comment for fragments
 updated docs

test/runner/lib/classification.py

@@ -559,7 +559,7 @@ class PathMapper(object):
                     'units': 'all',
                 }
 
-        if path.startswith('lib/ansible/utils/module_docs_fragments/'):
+        if path.startswith('lib/ansible/plugins/docs_fragments/'):
             return {
                 'sanity': 'all',
             }

test/runner/lib/sanity/ansible_doc.py

@@ -41,9 +41,11 @@ class AnsibleDocTest(SanityMultipleVersion):
         skip_file = 'test/sanity/ansible-doc/skip.txt'
         skip_modules = set(read_lines_without_comments(skip_file, remove_blank_lines=True))
 
+        # This should use documentable plugins from constants instead
         plugin_type_blacklist = set([
             # not supported by ansible-doc
             'action',
+            'doc_fragments',
             'cliconf',
             'filter',
             'httpapi',

test/runner/lib/sanity/yamllint.py

@@ -44,7 +44,7 @@ class YamllintTest(SanitySingleVersion):
 
             [i.path for i in targets.include if os.path.splitext(i.path)[1] == '.py' and
              os.path.basename(i.path) != '__init__.py' and
-             i.path.startswith('lib/ansible/utils/module_docs_fragments/')],
+             i.path.startswith('lib/ansible/plugins/docs_fragments/')],
         ]
 
         paths = [sorted(p) for p in paths if p]