task: Retain more failed tasks
task: Retain more failed tasks

Since historical ones are of some interest.

vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,vrutkovs/vrutkovs.github.io,GNOME/gnome-ostree,vrutkovs/vrutkovs.github.io,chergert/gnome-continuous,GNOME/gnome-ostree,chergert/gnome-continuous,GNOME/gnome-ostree