Phoenix 180

First revision for review.  There are some open points here.  Still no test case added to consume the stats.  Will do the performance test once the system is available with me.
Create an ConnectionQueryServices.updateStats(String tenantId, String schemaName, String tableName) method and move this code to ConnectionQueryServicesImpl. The idea is that all HBase code is encapsulated in that class. You can make the one in ConnectionlessQueryServicesImpl be a noop.