Add production environment, replication for garage

Also deploy a third node in a different data center

site-cookbooks/kosmos_garage/templates/garage.toml.erb

@@ -2,7 +2,7 @@ metadata_dir = "<%= @metadata_dir %>"
 data_dir = "<%= @data_dir %>"
 db_engine = "<%= @db_engine %>"
 
-replication_mode = "none"
+replication_mode = "<%= @replication_mode %>"
 
 rpc_bind_addr = "[::]:<%= @rpc_port %>"
 rpc_public_addr = "<%= @rpc_public_addr %>"