Edit ansible script for deploy kibana

Kibana deployment failed becaused of kibana_confs variable does not have attribute key,
So handlers failed to check conditional kibana_conf.changed | bool becaused of
kibana_confs.results|selectattr(item.key) does not exits.

Change variable name kibana_confs to kibana_conf.

Change-Id: If5e0a25b270a6f05c435a6dc32e2ac49406389c5
Closes-Bug: #1819246

ansible/roles/kibana/handlers/main.yml

@@ -4,7 +4,6 @@
     service_name: "kibana"
     service: "{{ kibana_services[service_name] }}"
     config_json: "{{ kibana_config_jsons.results|selectattr('item.key', 'equalto', service_name)|first }}"
-    kibana_conf: "{{ kibana_confs.results|selectattr('item.key', 'equalto', service_name)|first }}"
     kibana_container: "{{ check_kibana_containers.results|selectattr('item.key', 'equalto', service_name)|first }}"
   become: true
   kolla_docker:

ansible/roles/kibana/tasks/config.yml

@@ -34,7 +34,7 @@
     dest: "{{ node_config_directory }}/kibana/kibana.yml"
     mode: "0660"
   become: true
-  register: kibana_confs
+  register: kibana_conf
   with_first_found:
     - "{{ node_custom_config }}/kibana/{{ inventory_hostname }}/kibana.yml"
     - "{{ node_custom_config }}/kibana/kibana.yml"