Set def value for auth_cookie_name (#523)

Author: vjrj

ansible/roles/collectory/templates/config/collectory-config.properties

@@ -16,7 +16,8 @@ security.cas.loginUrl={{ auth_base_url }}/cas/login
 security.cas.logoutUrl={{ auth_base_url }}/cas/logout
 
 security.cas.contextPath={{ collectory_context_path }}
-security.cas.authCookieName={{ auth_cookie_name }}
+security.cas.authCookieName={{ auth_cookie_name | default('ALA-Auth') }}
+
 
 security.apikey.serviceUrl={{ apikey_service_url | default('https://auth.ala.org.au/apikey/ws/check?apikey=')}}
 security.apikey.checkEnabled={{ api_key_check_enabled | default('false') }}