erp5: Parametarise mariadb data-directory

stack/erp5/buildout.hash.cfg

@@ -26,7 +26,7 @@ md5sum = 1af531c51f575a1d1362f2ca2d61620d
 
 [template-mariadb]
 filename = instance-mariadb.cfg.in
-md5sum = f59c9c313147e437637c2c5ef00438d0
+md5sum = 4434c0aef147805e7340004eaac735a7
 
 [template-kumofs]
 filename = instance-kumofs.cfg.in

stack/erp5/instance-mariadb.cfg.in

@@ -126,7 +126,8 @@ command = {{ parameter_dict['findutils-location'] }}/bin/find "${directory:maria
 ip = {{ ip }}
 port = {{ port }}
 socket = ${directory:run}/mariadb.sock
-data-directory = ${directory:mariadb-data}
+{% set data_directory = slapparameter_dict.get('data-directory', '${directory:mariadb-data}') -%}
+data-directory = {{ data_directory }}
 tmp-directory = ${directory:tmp}
 etc-directory = ${directory:etc}
 pid-file = ${directory:run}/mariadb.pid