Update Read and Append testcases - CLDCONNECT-2159
JIRA ID - CLDCONNECT-2159 - https://www.mulesoft.org/jira/browse/CLDCONNECT-2159

1. ReadTestCases and flow in automation-test-flows has been refactored since read is an inbound endpoint now.
2. AppendTestCases has been refactored to take into account the changes to automation-test-flows.
Reverting version="EE-3.5.0" in automation-test-flows.xml.
1. Adding @Ignore for testRenameFile in RenameTestCases
2. Removing a commented code in AppendTestCases
Merge pull request #12 from mulesoft/feature/CLDCONNECT-2159_Read_Append_TestCases

Update Read and Append testcases - CLDCONNECT-2159