Fix Validator Tests and statements for validator
Merge remote-tracking branch 'origin/future/0.1.0' into future/0.1.0

Conflicts:
	meta-core/src/main/java/com/stratio/meta2/core/statements/CreateIndexStatement.java
	meta-core/src/test/java/com/stratio/meta2/core/validator/statements/AttachClusterStatementTest.java
	meta-core/src/test/java/com/stratio/meta2/core/validator/statements/AttachConnectorStatementTest.java
Fix problems with the Statements name used in the validator