Fix inverted ignore_errors condition for etcd-events service startup (#13343)

The ignore_errors condition on the etcd-events service startup task
(Configure | Ensure etcd-events is running) uses != instead of ==,
which is the inverse of the correct pattern used for the main etcd
service on the line above.

This was introduced in commit 7516fe142 when the # noqa ignore-errors
comment was added to the line, accidentally flipping the operator.

roles/etcd/tasks/configure.yml

@@ -93,7 +93,7 @@
     name: etcd-events
     state: started
     enabled: true
-  ignore_errors: "{{ etcd_events_cluster_is_healthy.rc != 0 }}"  # noqa ignore-errors
+  ignore_errors: "{{ etcd_events_cluster_is_healthy.rc == 0 }}"  # noqa ignore-errors
   when:
     - ('etcd' in group_names)
     - etcd_events_cluster_setup