Partitioned Region clear is successful while interacting with transaction

Clear operations are successful when working with transactions.

• If transaction acquire the lock first, clear op will wait.
• if clear op acquires the lock first, transaction will

Acceptance :

• DUnit tests validating the above behavior.
• Test coverage to when a member departs in this scenario
• Test coverage to when a member restarts in this scenario
• Unit tests with complete code coverage for the newly written code.