[tables/automl] fix: update the csv file and the dataset name

[tmatsuo]

fixes #4177
fixes #4178

I needed to modify the csv file to only have positive values in the Balance column. I don't have a permission on the cloud-ml-tables-data, so I created a new bucket and uploaded the file there. Here is a throw-away python script to modify the csv:

from tempfile import NamedTemporaryFile
import shutil
import csv

filename = 'bank-marketing.csv'
tempfile = NamedTemporaryFile(mode='w', delete=False)

fields = ['Age','Job','MaritalStatus','Education','Default','Balance','Housing','Loan','Contact','Day','Month','Duration','Campaign','PDays','Previous','POutcome','Deposit']

with open(filename, 'r') as csvfile, tempfile:
    reader = csv.DictReader(csvfile, fieldnames=fields)
    writer = csv.DictWriter(tempfile, fieldnames=fields)
    for row in reader:
        if row['Age'] != 'Age' and int(row['Balance']) == 0:
            row['Balance'] = 1
        if row['Age'] != 'Age' and int(row['Balance']) < 0:
            print('updating row')
            row['Balance'] = int(row['Balance']) * -1
        writer.writerow(row)

shutil.move(tempfile.name, filename)

[tmatsuo]

cc @sirtorry