gnomeos: More build fixes for latest gstreamer, switch to new folks branch
gnomeos: More build fixes for latest gstreamer, switch to new folks branch

GNOME/ostree,resin-io/ostree,resin-io/ostree,GNOME/ostree,sujitfulse/ostree,GNOME/ostree,gatispaeglis/ostree,GNOME/ostree,leandrosansilva/ostree,resin-io/ostree,sujitfulse/ostree,gatispaeglis/ostree,leandrosansilva/ostree,gatispaeglis/ostree,leandrosansilva/ostree,sujitfulse/ostree,sujitfulse/ostree,GNOME/ostree,resin-io/ostree,sujitfulse/ostree,gatispaeglis/ostree,leandrosansilva/ostree,leandrosansilva/ostree,gatispaeglis/ostree,resin-io/ostree,gatispaeglis/ostree