set_fact should put facts in the fact_cache, not vars_cache

Also fixes a template path lookup issue when using an include

Fixes #12277

lib/ansible/executor/process/result.py

@@ -158,7 +158,7 @@ class ResultProcess(multiprocessing.Process):
                         elif 'ansible_facts' in result_item:
                             # if this task is registering facts, do that now
                             item = result_item.get('item', None)
-                            if result._task.action in ('set_fact', 'include_vars'):
+                            if result._task.action == 'include_vars':
                                 for (key, value) in iteritems(result_item['ansible_facts']):
                                     self._send_result(('set_host_var', result._host, result._task, item, key, value))
                             else:

lib/ansible/plugins/action/template.py

@@ -68,7 +68,28 @@ class ActionModule(ActionBase):
             if source is None:
                 return dict(failed=True, msg="could not find src in first_available_file list")
         else:
-            if self._task._role is not None:
+            if self._task._task_include is not None:
+                parent_include = self._task._task_include
+                while parent_include is not None:
+                    parent_include_dir = self._templar.template(os.path.dirname(parent_include.args.get('_raw_params')))
+                    while parent_include_dir:
+                        if self._task._role:
+                            new_basedir = os.path.join(self._task._role._role_path, 'tasks', parent_include_dir)
+                            source = self._loader.path_dwim_relative(new_basedir, 'tasks', source)
+                        else:
+                            new_basedir = os.path.join(self._loader.get_basedir(), parent_include_dir)
+                            source = self._loader.path_dwim_relative(new_basedir, 'templates', os.path.basename(source))
+
+                        if os.path.exists(source):
+                            break
+                        else:
+                            parent_include_dir = os.path.dirname(parent_include_dir)
+
+                    if os.path.exists(source):
+                        break
+                    else:
+                        parent_include = parent_include._task_include
+            elif self._task._role is not None:
                 source = self._loader.path_dwim_relative(self._task._role._role_path, 'templates', source)
             else:
                 source = self._loader.path_dwim_relative(self._loader.get_basedir(), 'templates', source)