lc-hello-svc: removed this now-redundant service

lc-esp-engine-svc: Updated broker to inject lc.esp.correlation_id if it is missing (but a correlation was provided at the protocol level).

lc-esp-sdk-js: Fixed a bug where socket reconnections would call the connection callback multiple times causing errant behavior

lc-esp-sdk: ESPService now correctly handles exceptions from handlers without stalling the entire consumer

lc-esp-json: Failure to decode a JSON value is now grounds to throw an exception instead of a warning