Fix order spec on MySQL
Fix order spec on MySQL

We cannot guarantee that these two payments are returned in a certain
order, mostly due to timestamp precision, but the spec also shouldn't be
dependent on the default ordering of the payments association.

Senjai/solidus,ckk-scratch/solidus,pervino/solidus,xuewenfei/solidus,Senjai/solidus,devilcoders/solidus,ckk-scratch/solidus,jordan-brough/solidus,forkata/solidus,bonobos/solidus,lsirivong/solidus,Arpsara/solidus,lsirivong/solidus,xuewenfei/solidus,jsurdilla/solidus,xuewenfei/solidus,grzlus/solidus,pervino/solidus,devilcoders/solidus,scottcrawford03/solidus,scottcrawford03/solidus,jordan-brough/solidus,ckk-scratch/solidus,grzlus/solidus,xuewenfei/solidus,Arpsara/solidus,richardnuno/solidus,grzlus/solidus,athal7/solidus,jsurdilla/solidus,ckk-scratch/solidus,scottcrawford03/solidus,richardnuno/solidus,Senjai/solidus,athal7/solidus,jordan-brough/solidus,jordan-brough/solidus,pervino/solidus,lsirivong/solidus,bonobos/solidus,devilcoders/solidus,pervino/solidus,richardnuno/solidus,richardnuno/solidus,lsirivong/solidus,forkata/solidus,jsurdilla/solidus,forkata/solidus,athal7/solidus,Arpsara/solidus,grzlus/solidus,bonobos/solidus,bonobos/solidus,Senjai/solidus,athal7/solidus,Arpsara/solidus,devilcoders/solidus,forkata/solidus,scottcrawford03/solidus,jsurdilla/solidus