Fix Desc Table bugs

DESC TABLE operation is having the following bugs:

1. Whole table descs have two headers.
2. Table column desc has incorrect long header, while the table is transposed having the headers in the first column.
3. Json formatted data also has the headers.
4. Json formatted data doesn't have the column statistics in it.
5. There is no TestBeeLineDriver test for desc table, thus the actual output is not tested, just some intermediary.