Catch invalid root user kickstart options early [HMS-9378]#1879

supakeen merged 6 commits into

osbuild:mainosbuild/image-builder:mainfrom

achilleas-k:fix/catch-invalid-root-user-kickstart-earlyachilleas-k/image-builder:fix/catch-invalid-root-user-kickstart-earlyCopy head branch name to clipboard