Hive Scan : Add fileCount (no of files scanned) or no of partitions scanned to the text plan

The hive scan portion of the text plan only lists the files scanned. It would be helpful if the text plan also had fileCount value or the number of partitions scanned.

Reason : Currently as part of our tests we are verifying plans using a regex based verification and the expected regex is matching more than it should. Fixing this might be hard. So if we have the fileCount/partitionCount as part of the plan, the plan comparision will be more accurate