Adding Key Value producer method "send(Map<String, String> ..)"

[jgsofi]

Bug

The key-value pair Consumer option does not have a corresponding Producer method.

Story

Developer: "I want to create a producer that can send to SomeConsumer, but I don't have the documentation, lets look at the source."

@Message
Map<String, String> msg;

@OnValidate
public bool validate() {
    returm msg.hasKey("a") && msg.hasKey("b");
}

Developer: "Oh, I get it, I just need to send a Map like this."

Map<String, String> msg = new HashMap<>();
msg.set("a", "data1");
msg.set("b", "data2");
forkliftProducer.send(msg);

Forklift: validation failed

Developer: ???

Explanation

The map was serialized as JSON in the Producer, but deserialized as key-value pairs on the Consumer, even though they share the same type.)

Fix

Add an additional send(...) method so that sending a Map<String, String> serializes to key-value pairs instead of JSON.

Testing/Deployment

This changes both forklift connector plugin API and the forklift plugins that depend on it. It requires that you locally deploy a new forklift core before you build or test the ActiveMQProducer plugin.