1. Simulator and Java API: Added logic to handle connection Id

verification/assignment when there are other exceptions also being
raised in the request message.  Such as cluster version mismatch
scenario.

2. Simulator: by default, the connection Id is checked and logged as
warning messages if does not match. The flag wil be reset when drive
code with this feature is released and enforced.

3. Simulator: uses "next available unique timestamp" (type long) for
connection Ids to be more consistent with the drive behavior.