service account "router" is not allowed to access the host network on nodes

[0xmichalis]

FAILURE after 0.589s: test/cmd/router.sh:29: executing 'oadm router --dry-run -o yaml' expecting failure and text 'name: router': the output content test failed
Standard output from the command:
apiVersion: v1
items:
- apiVersion: v1
  kind: ServiceAccount
  metadata:
    creationTimestamp: null
    name: router
<- snip ->
Standard error from the command:
error: router could not be created; service account "router" is not allowed to access the host network on nodes, grant access with oadm policy add-scc-to-user hostnetwork -z router
=== END TEST CASE ===

https://ci.openshift.redhat.com/jenkins/job/test_pull_requests_origin_check/1392/console

[danmcp]

@knobunc

[stevekuznetsov]

dupe of #9371