module_helper - implemented classmethod to start the module (#3206) (#3225)

* module_helper - implemented classmethod to start the module plus minor change

* rolled back the __changed__() method

* added changelog fragment

* Update plugins/module_utils/mh/base.py

Co-authored-by: Sviatoslav Sydorenko <wk.cvs.github@sydorenko.org.ua>

* no capt Piccards allowed in the base class

* removed extra piccards

Co-authored-by: Sviatoslav Sydorenko <wk.cvs.github@sydorenko.org.ua>
(cherry picked from commit 41101e55a0)

Co-authored-by: Alexei Znamensky <103110+russoz@users.noreply.github.com>

changelogs/fragments/3206-mh-classmethod.yaml

@@ -0,0 +1,2 @@
+minor_changes:
+  - module_helper module_utils - added classmethod to trigger the execution of MH modules (https://github.com/ansible-collections/community.general/pull/3206).

plugins/module_utils/mh/base.py

@@ -63,3 +63,7 @@ class ModuleHelperBase(object):
         if 'failed' not in output:
             output['failed'] = False
         self.module.exit_json(changed=self.has_changed(), **output)
+
+    @classmethod
+    def execute(cls, module=None):
+        cls(module).run()

plugins/modules/packaging/language/cpanm.py

@@ -248,8 +248,7 @@ class CPANMinus(CmdMixin, ModuleHelper):
 
 
 def main():
-    cpanm = CPANMinus()
-    cpanm.run()
+    CPANMinus.execute()
 
 
 if __name__ == '__main__':

plugins/modules/system/xfconf.py

@@ -272,8 +272,7 @@ class XFConfProperty(CmdMixin, StateMixin, ModuleHelper):
 
 
 def main():
-    xfconf = XFConfProperty()
-    xfconf.run()
+    XFConfProperty.execute()
 
 
 if __name__ == '__main__':