UPSTREAM: <carry>: Add disconnected annotation for OperatorHub

Per [0]. This allows filtering of operators in OperatorHub based on
the ability to run in a disconnected environment.

0: https://docs.openshift.com/container-platform/4.9/operators/operator_sdk/osdk-generating-csvs.html#olm-enabling-operator-for-restricted-network_osdk-generating-csvs
(cherry picked from commit c09fc28)
(cherry picked from commit 5b9e626)
(cherry picked from commit ceab562)

manifests/4.10/kubernetes-nmstate-operator.v4.10.0.clusterserviceversion.yaml

@@ -24,6 +24,7 @@ metadata:
         }
       }]
     operatorframework.io/suggested-namespace: openshift-nmstate
+    operators.openshift.io/infrastructure-features: '["disconnected"]'
     capabilities: Basic Install
     certified: "false"
     categories: OpenShift Optional