added an mixin for reloading and restarting changed services

plugins/module_utils/module.py

@@ -345,3 +345,16 @@ def installable(_class: Type[SystemdUnitModule]):
     _class.install = install
     _class.module_spec = specs
     return _class
+
+
+class SystemdReloadMixin(SystemdUnitModule):
+    def post(self):
+        if not self.changed:
+            return
+        systemctl = self.module.get_bin_path("systemctl", required=True)
+        self.module.run_command([systemctl, "daemon-reload"], check_rc=True)
+        if self.unitfile.stem.endswith("@"):
+            return
+        (rc, _, _) = self.module.run_command([systemctl, "is-enabled", self.unitfile.name], check_rc=False)
+        if rc == 0:
+            self.module.run_command([systemctl, "restart", self.unitfile.name], check_rc=True)