Update CHANGELOG for v1.2.2-training release
Update CHANGELOG for v1.2.2-training release

limed/nubis-skel,tinnightcap/nubis-skel,gozer/nubis-skel,limed/nubis-skel,Nubisproject/nubis-skel,tinnightcap/nubis-skel,gozer/nubis-skel