fix module defaults (#56020)

* fix module defaults

 - corrected precedence (specific module > group)
 - made into reusable function
 - use from gather_facts/service/package to match 'actual module used'

lib/ansible/plugins/action/gather_facts.py

@@ -8,6 +8,7 @@ import os
 import time
 
 from ansible import constants as C
+from ansible.executor.module_common import get_action_args_with_defaults
 from ansible.plugins.action import ActionBase
 from ansible.utils.vars import combine_vars
 
@@ -39,6 +40,9 @@ class ActionModule(ActionBase):
         # This ensures we don't pass a ``None`` value as an argument expecting a specific type
         mod_args = dict((k, v) for k, v in mod_args.items() if v is not None)
 
+        # handle module defaults
+        mod_args = get_action_args_with_defaults(fact_module, mod_args, self._task.module_defaults, self._templar)
+
         return mod_args
 
     def run(self, tmp=None, task_vars=None):

lib/ansible/plugins/action/package.py

@@ -18,6 +18,7 @@ from __future__ import (absolute_import, division, print_function)
 __metaclass__ = type
 
 from ansible.errors import AnsibleAction, AnsibleActionFail
+from ansible.executor.module_common import get_action_args_with_defaults
 from ansible.plugins.action import ActionBase
 from ansible.utils.display import Display
 
@@ -64,6 +65,9 @@ class ActionModule(ActionBase):
                     if 'use' in new_module_args:
                         del new_module_args['use']
 
+                    # get defaults for specific module
+                    new_module_args = get_action_args_with_defaults(module, new_module_args, self._task.module_defaults, self._templar)
+
                     display.vvvv("Running %s" % module)
                     result.update(self._execute_module(module_name=module, module_args=new_module_args, task_vars=task_vars, wrap_async=self._task.async_val))
             else:

lib/ansible/plugins/action/service.py

@@ -19,6 +19,7 @@ __metaclass__ = type
 
 
 from ansible.errors import AnsibleAction, AnsibleActionFail
+from ansible.executor.module_common import get_action_args_with_defaults
 from ansible.plugins.action import ActionBase
 
 
@@ -71,6 +72,9 @@ class ActionModule(ActionBase):
                             del new_module_args[unused]
                             self._display.warning('Ignoring "%s" as it is not used in "%s"' % (unused, module))
 
+                # get defaults for specific module
+                new_module_args = get_action_args_with_defaults(module, new_module_args, self._task.module_defaults, self._templar)
+
                 self._display.vvvv("Running %s" % module)
                 result.update(self._execute_module(module_name=module, module_args=new_module_args, task_vars=task_vars, wrap_async=self._task.async_val))
             else: