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)
(cherry picked from commit 430895e)
(cherry picked from commit 6b5304c)
(cherry picked from commit c3a2a17)

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