Pod fails with error 'Statfs "/proc/xxxxx/ns/net": no such file or directory' in RHOCP 3.

Issue

• Pod fails with below errors in atomic-openshift-node logs:

  Dec 22 21:37:26 node1 atomic-openshift-node[2963]: W1222 21:37:26.037706    2963 cni.go:243] CNI failed to retrieve network namespace path: cannot find network namespace for the terminated container "xxxx"
  Dec 22 21:37:26 node1 atomic-openshift-node[2963]: E1222 21:37:26.482644    2963 cni.go:260] Error adding network: failed to Statfs "/proc/xxxx/ns/net": no such file or directory
  Dec 22 21:37:26 node1 atomic-openshift-node[2963]: E1222 21:37:26.482669    2963 cni.go:221] Error while adding to cni lo network: failed to Statfs "/proc/xxxx/ns/net": no such file or directory
  

• Setting SELinux mode to permissive solve, but it's not a correct nor supported configuration.