closes#1079
Default value of `retry` behaves like previous version.
`restart` and `restart_with_context` restart the flow upon an invalid response. `restart_with_context` keeps the same context of the Flow, allowing users to bind policies that maybe aren't valid on the first execution, but are after a retry, like a reputation policy with a deny stage.
Signed-off-by: Jens Langhammer <jens.langhammer@beryju.org>
2b1356bb91