[hbase] Confirm that filters work

Thrift call: hbased.Hbase.Client.scannerOpenWithScan(args=(u'document_demo', TScan(stopRow=None, filterString=u"(ColumnPaginationFilter(500,0) AND PageFilter(500)) AND (ColumnPrefixFilter('d*'))", timestamp=None, batchSize=None, startRow='+3', caching=None, columns=[]), None), kwargs={'doas': u'hdfs'})