Adds support for optional restart on change

Author: Dale McDiarmid

defaults/main.yml

@@ -4,6 +4,7 @@ es_version: "2.1.0"
 es_version_lock: false
 es_use_repository: true
 es_start_service: true
+es_restart_on_change: true
 es_plugins_reinstall: false
 es_scripts: false
 es_templates: false

handlers/main.yml

@@ -1,4 +1,4 @@
 
 - name: restart elasticsearch
   service: name={{instance_init_script | basename}} state=restarted enabled=yes
-  when: es_start_service and (not elasticsearch_started.changed or (plugin_installed is defined and plugin_installed.changed) or elasticsearch_install.changed)
+  when: es_restart_on_change and es_start_service and (not elasticsearch_started.changed or (plugin_installed is defined and plugin_installed.changed) or elasticsearch_install.changed)