add overriding truncated_namespace condition for truncating paths for digital ocean

lib/pleroma/uploaders/s3.ex

@@ -13,9 +13,14 @@ def get_file(file) do
     bucket = Keyword.fetch!(config, :bucket)
 
     bucket_with_namespace =
-      if namespace = Keyword.get(config, :bucket_namespace) do
+      cond do
+        truncated_namespace = Keyword.get(config, :truncated_namespace) ->
+          truncated_namespace
+
+        namespace = Keyword.get(config, :bucket_namespace) ->
           namespace <> ":" <> bucket
-      else
+
+        true ->
           bucket
       end