rbac: Add network resources to cluster-reader role

Add read permissions (i.e. get, list, watch) for network-related resources to the
cluster-reader ClusterRole aggregation. The resources are:
- egressrouters.network.operator.openshift.io
- network-attachment-definitions.k8s.cni.cncf.io
- networks.operator.openshift.io

Fixes: OCPBUGS-35387

Author: mattedallo

bindata/network/ovn-kubernetes/common/007-rbac-cluster-reader.yaml

@@ -37,3 +37,24 @@ rules:
   - get
   - list
   - watch
+- apiGroups: ["network.operator.openshift.io"]
+  resources:
+  - egressrouters
+  verbs:
+  - get
+  - list
+  - watch
+- apiGroups: ["operator.openshift.io"]
+  resources:
+  - networks
+  verbs:
+  - get
+  - list
+  - watch
+- apiGroups: ["k8s.cni.cncf.io"]
+  resources:
+  - network-attachment-definitions
+  verbs:
+  - get
+  - list
+  - watch