Correct consistency between upgrade playbooks

playbooks/byo/openshift-cluster/upgrades/v3_4/upgrade_control_plane.yml

@@ -94,5 +94,7 @@
   - include: ../../../../common/openshift-cluster/upgrades/cleanup_unused_images.yml
 
 - include: ../../../../common/openshift-cluster/upgrades/upgrade_control_plane.yml
+  vars:
+    master_config_hook: "v3_4/master_config_upgrade.yml"
 
 - include: ../../../../common/openshift-cluster/upgrades/post_control_plane.yml