OCP 4 bootstrap node installation fails with an error "sdn and sdn-controller pod not available"

Issue

• The bootstrap installation fails with an error:

ERROR Cluster operator network Degraded is True with RolloutHung: DaemonSet "openshift-sdn/sdn" rollout is not making progress - last change 2020-08-25T04:38:51Z
INFO Cluster operator network Progressing is True with Deploying: DaemonSet "openshift-multus/multus-admission-controller" is waiting for other operators to become ready
DaemonSet "openshift-sdn/sdn-controller" is not available (awaiting 2 nodes)
DaemonSet "openshift-sdn/sdn" is not available (awaiting 3 nodes)
INFO Cluster operator network Available is False with Startup: The network is starting up
INFO Use the following commands to gather logs from the cluster
INFO openshift-install gather bootstrap --help
FATAL failed to wait for bootstrapping to complete: timed out waiting for the condition