Fix docs to require docker config on all nodes
Fix docs to require docker config on all nodes

Change-Id: I31d8007ed01dbb621b1379c164d075a6d70674f1

intel-onp/kolla,GalenMa/kolla,coolsvap/kolla,nihilifer/kolla,nihilifer/kolla,openstack/kolla,rahulunair/kolla,coolsvap/kolla,coolsvap/kolla,stackforge/kolla,rahulunair/kolla,GalenMa/kolla,mrangana/kolla,intel-onp/kolla,stackforge/kolla,openstack/kolla,mrangana/kolla,stackforge/kolla