BUG 1082 Migrate sal-rest-connector to Async Data Broker API

Rework of sal-rest-connector project to support Async Data Broker API

Change-Id: I73804418a04445b236d12693e493a11850dd94dd
Signed-off-by: Jozef Gloncak <jgloncak@cisco.com>
Merge "BUG 1082 Migrate sal-rest-connector to Async Data Broker API"