upgrade: init facts on nodes so that NO_PROXY would include nodes

Node hostnames need to be added to NO_PROXY list, as its required for 
SDN to work in proxy environment. Currently facts from nodes are not 
collected on major upgrade, so only master hostnames are added in the 
list

playbooks/common/openshift-cluster/upgrades/v3_10/upgrade_control_plane.yml

@@ -14,7 +14,7 @@
 - import_playbook: ../init.yml
   vars:
     l_upgrade_no_switch_firewall_hosts: "oo_masters_to_config:oo_etcd_to_config:oo_lb_to_config"
-    l_init_fact_hosts: "oo_masters_to_config:oo_etcd_to_config:oo_lb_to_config"
+    l_init_fact_hosts: "oo_masters_to_config:oo_etcd_to_config:oo_lb_to_config:oo_nodes_to_config"
     l_base_packages_hosts: "oo_masters_to_config:oo_etcd_to_config:oo_lb_to_config"
 
 - name: Configure the upgrade target for the common upgrade tasks 3.10