bot: add more sleep and trial when getting my_orders

Cryptsy will return old order data, so, sleep more and re-try more times.

Signed-off-by: AceLan Kao <acelan@acelan.idv.tw>
bot: add wait_order_succeed() function

Remove all re-try loop and replace them with wait_order_succeed()
This could make sure the order we submit had been processed.

Signed-off-by: AceLan Kao <acelan@acelan.idv.tw>