Add support for replicating from multinode dbs

manifests/mariadb.pp

@@ -4,7 +4,8 @@ class sunetdrive::mariadb (
   $location  = undef,
   $tag_mariadb = undef,
   $override_config = undef,
-  $override_compose = undef
+  $override_compose = undef,
+  $replicate_rewrite_db = undef,
 ) {
 
   $quorum_id = $::fqdn

templates/mariadb/my.cnf.erb

@@ -19,6 +19,10 @@ gtid_strict_mode        = ON
 log_bin                 = binlog
 log_slave_updates       = ON
 server_id               = <%= @server_id %> 
+<% if not @replicate_rewrite_db.nil? -%>
+replicate-rewrite-db    = "<%= @replicate_rewrite_db %>->nextcloud"
+replicate-wild-do-table = <%= @replicate_rewrite_db %>.%
+<% end -%>
 
 # Innodb
 innodb_autoinc_lock_mode        = 2