In Configure authorization and multi-tenancy [A]
 Procedure (in all version) 3 yalms needs to be created that are 
mentioned in point.2 those yamls are semerated by `...` because of which
 if we copy its contents to single file and run `oc create -f <file 
name> ` only ClusterRole:netobserv-reader gets created. 

1.
2.
3.

Change `...` to `---` so all files will be created at once

    [A] https://docs.openshift.com/container-platform/4.13/networking/network_observability/installing-operators.html#network-observability-auth-mutli-tenancy_network_observability