Description of problem:
https://issues.redhat.com/browse/SDN-2736: "Create runbook and link SOP for NorthboundStale alert"

There is no runbook created for NorthboundStale alert in latest v4.11 build.

Version-Release number of selected component (if applicable):
4.11.0-0.nightly-2022-06-04-014713

How reproducible:
Always

Steps to Reproduce:
No runbook created for NorthboundStale alert
[weliang@weliang ~]$ oc -n openshift-ovn-kubernetes get PrometheusRule master-rules -o json
                    {
                        "alert": "NorthboundStale",
                        "annotations": {
                            "description": "Networking control plane is degraded. Networking configuration updates applied to the cluster will not be\nimplemented. Existing workloads should continue to have connectivity. OVN-Kubernetes control plane and/or\nOVN northbound database may not be functional.\n",
                            "summary": "ovn-kubernetes has not written anything to the northbound database for too long."
                        },
                        "expr": "time() - max(ovnkube_master_nb_e2e_timestamp) \u003e 120\n",
                        "for": "10m",
                        "labels": {
                            "severity": "warning"
                        }
                    },
[weliang@weliang ~]$ oc -n openshift-ovn-kubernetes get PrometheusRule master-rules -o jsonpath={.spec.groups[0].rules[3].annotations.runbook_url}

#### Compare NoOvnMasterLeader alert
[weliang@weliang ~]$ oc -n openshift-ovn-kubernetes get PrometheusRule master-rules -o jsonpath={.spec.groups[0].rules[2].annotations.runbook_url}
https://github.com/openshift/runbooks/blob/master/alerts/cluster-network-operator/NoOvnMasterLeader.md

[weliang@weliang ~]$ oc -n openshift-ovn-kubernetes get PrometheusRule master-rules -o json
                    {
                        "alert": "NoOvnMasterLeader",
                        "annotations": {
                            "description": "Networking control plane is degraded. Networking configuration updates applied to the cluster will not be\nimplemented while there is no OVN Kubernetes leader. Existing workloads should continue to have connectivity.\nOVN-Kubernetes control plane is not functional.\n",
                            "runbook_url": "https://github.com/openshift/runbooks/blob/master/alerts/cluster-network-operator/NoOvnMasterLeader.md",
                            "summary": "There is no ovn-kubernetes master leader."
                        },
                        "expr": "max(ovnkube_master_leader) == 0\n",
                        "for": "10m",
                        "labels": {
                            "severity": "critical"
                        }
                    },

Actual results:
[weliang@weliang ~]$ oc -n openshift-ovn-kubernetes get PrometheusRule master-rules -o jsonpath={.spec.groups[0].rules[3].annotations.runbook_url}

Nothing return

Expected results:
[weliang@weliang ~]$ oc -n openshift-ovn-kubernetes get PrometheusRule master-rules -o jsonpath={.spec.groups[0].rules[3].annotations.runbook_url}
https://github.com/openshift/runbooks/blob/master/alerts/cluster-network-operator/NorthboundStale.md

Additional info: