add PK find test
add PK functional test
Merge branch 'develop' of https://github.com/Stratio/stratio-connector-commons into develop

Conflicts:
	connector-commons-ftest/src/test/java/com/stratio/connector/commons/ftest/functionalTestQuery/GenericQueryTest.java
	connector-commons-ftest/src/test/java/com/stratio/connector/commons/ftest/workFlow/LogicalWorkFlowCreator.java