Timeout while waiting for changeset to complete #770

For some reason, my changesets are taking a while to complete, which results in stacker failing with:

stack: failed (Changeset 'arn:aws:cloudformation:eu-west-1:000000000000:changeSet/change-set-0000000000/dsfjlkdjflafadsfa-kdjfgksjfgds-dsfksjdfgk' did not reach a completed state.)

I had a look through the code and found this method: https://github.com/cloudtools/stacker/blob/master/stacker/providers/aws/default.py#L291 but there doesn't seem to be a way to override the parameters to increase the timeout. Is there a way to do this?