Build full node config path in systemd_units tasks.

roles/openshift_node/tasks/systemd_units.yml

@@ -42,7 +42,7 @@
     - regex: '^OPTIONS='
       line: "OPTIONS=--loglevel={{ openshift.node.debug_level | default(2) }}"
     - regex: '^CONFIG_FILE='
-      line: "CONFIG_FILE={{ openshift_node_config_file }}"
+      line: "CONFIG_FILE={{ openshift.common.config_base }}/node/node-config.yaml }}"
     - regex: '^IMAGE_VERSION='
       line: "IMAGE_VERSION={{ openshift_image_tag }}"
   notify: