Update db.py - add parameters

[kavichu]

Add login, country_code, phone parameters to allow users to configure these parameters during database creation.

I read file and function exp_create_database

@check_db_management_enabled
def exp_create_database(db_name, demo, lang, user_password='admin', login='admin', country_code=None, phone=None):
    """ Similar to exp_create but blocking."""
    _logger.info('Create database `%s`.', db_name)
    _create_empty_database(db_name)
    _initialize_db(id, db_name, demo, lang, user_password, login, country_code, phone)
    return True

I saw that there is a way to send more useful parameters when calling DB.create