* [ocaml] Open Lwt.Infix rather than Lwt
The Lwt module has functions that might shadow parameters, and all the
functions we use from Lwt are in Lwt.Infix too.
File "src/apis/image_api.ml", line 13, characters 69-72:
13 | let uri = Request.maybe_add_query_param uri "all" string_of_bool all in
^^^
Error: This expression has type 'a t list -> 'a list t
but an expression was expected of type bool option
* [ocaml] update petstore samples