hbase的count竟然不兼容

老版本的hbase count时可以用不存在的列count，结果是包含该行的。
较新版本的hbase count时用不存在的列count，结果是0。

```
@Test
public void testCount_NonExistColumn() throws Throwable {
LongColumnInterpreter columnInterpreter = new LongColumnInterpreter();
AggregationClient aggregationClient = new AggregationClient(
Config.getConfiguration());

Scan scan = new Scan();
scan.addColumn(ColumnFamilyName, QName_NotExistColumn);

Long count = aggregationClient.rowCount(TableNameBytes,
columnInterpreter, scan);
// Assert.assertTrue(count.longValue() == 4);
Assert.assertTrue(count.longValue() == 0);
}
```

Start with testCount_NonExistColumn and the AggregationClient.rowCount call shown in the issue. Run the test with the project’s HBase setup and compare the result with the commented expectation of 4 and the current expectation of 0. Done means the intended behavior for a nonexistent column is established and the test reflects compatible behavior.

Written by the indexing model from the issue text.