options should be settable multiple times

(cherry picked from commit 27e3cd6e05)

changelogs/fragments/fix_options.yml

@@ -0,0 +1,2 @@
+bugfixes:
+    - allow set_options to be called multiple times https://github.com/ansible/ansible/pull/41913

lib/ansible/plugins/__init__.py

@@ -70,11 +70,10 @@ class AnsiblePlugin(with_metaclass(ABCMeta, object)):
         :arg var_options: Dict with either 'conneciton variables'
         :arg direct: Dict with 'direct assignment'
         '''
-
-        if not self._options:
-            # load config options if we have not done so already, if vars provided we should be mostly done
         self._options = C.config.get_plugin_options(get_plugin_class(self), self._load_name, keys=task_keys, variables=var_options, direct=direct)
+
         # allow extras/wildcards from vars that are not directly consumed in configuration
+        # this is needed to support things like winrm that can have extended protocol options we don't direclty handle
         if self.allow_extras and var_options and '_extras' in var_options:
             self.set_option('_extras', var_options['_extras'])