refactor constructing newkv in building batchOperation

[Zhou-jw]

Test case:

String groupName = getTableName(entry.getKey());
        System.out.println("groupName: " + groupName);
        OHTableClient hTable = ObHTableTestUtil.newOHTableClient(groupName);
        hTable.init();

//        byte[] Rowkey = generateRandomValue(1024);
        byte[] Column = generateRandomValue(256);
        byte[] Rowkey = "rowkey".getBytes();
//        byte[] Column = "col".getBytes();
        byte[] Value = generateRandomValue(1024);
        int cnt = 0;
        long timestamp = System.currentTimeMillis();
        Put put = new Put(Rowkey);
        Delete delete = new Delete(Rowkey);
        for (String tableName : entry.getValue()) {
            String family = getColumnFamilyName(tableName);
            // 输出 Column的大小
//            System.err.println("Column array size: " + Column.length);
            put.addColumn(family.getBytes(), Column, timestamp, Value);
//            delete.addColumns(family.getBytes(), Column);
            cnt += 1;
        }

        hTable.put(put);
        System.out.println("put finished");
        Thread.sleep(3000);

        Get get1 = new Get(Rowkey);
        get1.setMaxVersions();
        for (String tableName : entry.getValue()) {
            String family = getColumnFamilyName(tableName);
            get1.addColumn(toBytes(family), Column);
            delete.addColumns(toBytes(family), Column, timestamp);
            System.out.println(tableName + " delete " + family + "_col ");
        }
        Result result = hTable.get(get1);
        Assert(entry.getValue(), ()->Assert.assertEquals(3, result.size()));

        hTable.delete(delete);

        Get get0 = new Get(Rowkey);
        get0.setMaxVersions();
        for (String tableName : entry.getValue()) {
            String family = getColumnFamilyName(tableName);
            get0.addColumn(toBytes(family), Column);
        }
        Result result0 = hTable.get(get0);
        Assert(entry.getValue(), ()->Assert.assertEquals(0, result0.size()));
        hTable.close();
        System.out.println(groupName + " succeeds");

see also #210

[maochongxin]

LGTM