Update Functional Testcases - CLDCONNECT-2155

JIRA ID - CLDCONNECT-2155 - https://www.mulesoft.org/jira/browse/CLDCONNECT-2155
1. HDFSTestParent is moved to org.mule.modules.hdfs.automation
2. CopyToLocalFileTestCases has been refactored to include teardown
3. CopyToLocalFileTestCases and CopyFromLocalFileTestCases have better assertions.
4. RenameTestCases has a new test case for testing file renaming.
5. fail() is used in correct manner in HDFSConnectorTestIT