consider support helm < 3.0.0

plugins/module_utils/helm.py

@@ -151,6 +151,9 @@ class AnsibleHelmModule(object):
             env_update["KUBECONFIG"] = kubeconfig_path
             self.add_cleanup_file(kubeconfig_path)
 
+        if LooseVersion(self.get_helm_version()) < LooseVersion("3.0.0"):
+            env_update["HELM_EXPERIMENTAL_OCI"] = "1"
+
         return env_update
 
     @property

plugins/modules/helm_registry_auth.py

@@ -223,10 +223,10 @@ def main():
         else:
             module.fail_json(
                 msg="Failure when executing Helm command. Exited {0}.\nstdout: {1}\nstderr: {2}".format(
-                rc, out, err
-               ),
-               command=helm_cmd,
-           )
+                    rc, out, err
+                ),
+                command=helm_cmd,
+            )
 
     module.exit_json(changed=changed, stdout=out, stderr=err, command=helm_cmd)