[Backport 2.9] gitlab_runner: fix idempotency for shared runners (#65545)

* gitlab_runner: fix idempotency for shared runners (#65176)


(cherry picked from commit 2eb615f1ef)

* add changelog

changelogs/fragments/65176-gitlab-runner-idempotency.yaml

@@ -0,0 +1,2 @@
+bugfixes:
+  - gitlab_runner - fix idempotency for shared runner

lib/ansible/modules/source_control/gitlab_runner.py

@@ -258,10 +258,10 @@ class GitLabRunner(object):
     @param description Description of the runner
     '''
     def findRunner(self, description):
-        runners = self._gitlab.runners.list(as_list=False)
+        runners = self._gitlab.runners.all(as_list=False)
         for runner in runners:
-            if (runner.description == description):
-                return self._gitlab.runners.get(runner.id)
+            if (runner['description'] == description):
+                return self._gitlab.runners.get(runner['id'])
 
     '''
     @param description Description of the runner