AMQP-432: Properly convert BasicProperties values

JIRA: https://jira.spring.io/browse/AMQP-432

Previously `DefaultMessagePropertiesConverter` converted just only `LongString`, but the `BasicProperties` may contains `List` values.
Add logic to properly convert that `List` to the target `List` with conversion it `LongString` values.

**Cherry-pick to 1.3.x**