Add optional argument `ordered` to consumer function get_next. If true messages will be ordered by message_id otherwise by _id.

Add boolean parameter `ordered` to request get_next. If True, it returns next by message_id, if not by _id.

Speedup get_next

See merge request asapo/asapo!203

Enable test of receiver with kafka. Add sleep of 3 sec after start of kafka listener to ensure that is it ready

Add components to run standalone asapo service inside of build_env container. This should help to run integration tests.