Artem Bilan 4d2e00d6c8 Fix LambdaMessageProcessor for Map payload ...

JIRA: https://jira.spring.io/browse/INT-4478

When we use a `GenericHandler` and an incoming payload is a `Map`, we
copy it into both arguments into the `Object` for the payload
and `Map` for the headers.
This way we lose headers in the target lambda

* Check a size of arguments on the target lambda and don't set a
payload into the `Map` argument if we have more than 1 arguments

**Cherry-pick to 5.0.x**

2018-05-31 15:21:24 -04:00

..

main

INT-4462: WebFluxInbound: cope with empty body

2018-05-07 12:47:06 -04:00

test

Fix LambdaMessageProcessor for Map payload

2018-05-31 15:21:24 -04:00