get_vm_list in SMT(subfunction of guest_list) report error: out of index

[cao biao]

when the item in the database table commented as {'migrated':1}, guest_list will report out of index error.
This is because the operation self._GuestDbOperator.get_migrated_guest_list() is "SELECT userid FROM guests " , but should be "SELECT * FROM guests ".use "SELECT * FROM guests " will fix this.

But this change will result in other problems, guest_register() API will use get_migrated_guest_list operation and expect it works like: "SELECT * FROM guests ":
    guests = self._GuestDbOperator.get_migrated_guest_list()
    if userid in str(guests):
           ...

So a new API need be created or guest_vm_list need to be changed.