Validate that operationTime returned by
Sharded or unsharded Replica Set matches the spec.
In a shell validate that
- mongos that talks to a sharded RS returns operationTime that is a Timestamp
- mongos that talks to a non sharded RS returns operationTime that is a Timestamp
- mongos that talks to a standalone DB does not return operationTime
- mongod from a sharded RS returns operationTime that is a Timestamp
- mongod from a non sharded RS returns operationTime that is a Timestamp
- mongod from a standalone DB does not return operationTime