Write more integration tests

[steven-xu-lf]

kept 3 skipped tests due to the entry serialization error
did not change the cancel operation test case due to the fact that another exception should be thrown later
add the integration tests that are missing
all tests should pass locally
running tests should not cause side effects. If there is, e.g., having an entry created during test, it should be removed before the termination of the test run
added the serverSessionClient route to the class
refactor test case renaming convention
Note: Do not include foreach or nextlink integration tests since @samadpaydar3 is working on that
Note 2: the current import document api in the client lib is missing the edoc parameter, so i did not include the import document test case but will include it later in another test case