Changes to Create a data refresh task

added the new optional request property request_extended_history

the access_token request property's maxLength was set to 32

the account/bank_name request property's maxLength was set to 128

the request property account/account_number became optional

the request property account/account_type became optional

the request property account/bank_name became optional

the request property account/deposit_type became optional

the request property account/routing_number became optional