Config files having underscores breaks Kolla-Kubernetes.

I just thought I'd dash off a quick patch and change the underscore
to a dash.

Change-Id: Ib34cfc8039de01be7e37176648482f9815ac3848
Closes-Bug: #1589734

ansible/roles/mariadb/tasks/config.yml

@@ -26,9 +26,9 @@
   with_items:
     - "mariadb"
 
-- name: Copying over wsrep_notify.sh
+- name: Copying over wsrep-notify.sh
   template:
-    src: "{{ role_path }}/templates/wsrep_notify.sh.j2"
+    src: "{{ role_path }}/templates/wsrep-notify.sh.j2"
-    dest: "{{ node_config_directory }}/{{ item }}/wsrep_notify.sh"
+    dest: "{{ node_config_directory }}/{{ item }}/wsrep-notify.sh"
   with_items:
     - "mariadb"

ansible/roles/mariadb/templates/galera.cnf.j2

@@ -24,7 +24,7 @@ wsrep_node_name={{ ansible_hostname }}
 wsrep_sst_method=xtrabackup-v2
 wsrep_sst_auth={{ database_user }}:{{ database_password }}
 wsrep_slave_threads=4
-wsrep_notify_cmd=/usr/local/bin/wsrep_notify.sh
+wsrep_notify_cmd=/usr/local/bin/wsrep-notify.sh
 
 max_connections=10000
 

ansible/roles/mariadb/templates/mariadb.json.j2

@@ -9,8 +9,8 @@
             "perm": "0600"
         },
         {
-            "source": "{{ container_config_directory }}/wsrep_notify.sh",
+            "source": "{{ container_config_directory }}/wsrep-notify.sh",
-            "dest": "/usr/local/bin/wsrep_notify.sh",
+            "dest": "/usr/local/bin/wsrep-notify.sh",
             "owner": "mysql",
             "perm": "0700"
         }