Add query identifier
Add query identifier to the result using the getResult method.
Creating sync interface
Modifying tests to receive the new ACK
Fix BasicQueryActorTest to support two messages, ACK, and QueryResult
Adding async driver functionality
Adding async driver functionality
Merge branch 'asyncDriver' into develop

Conflicts:
	meta-core/src/main/java/com/stratio/meta/core/statements/CreateTableStatement.java
	meta-driver/src/test/java/com/stratio/meta/driver/ConnectTest.java