do-release: sketch + a bunch of fixes from bench-all

qemu: monitor command from guest

zip-img

@@ -1,9 +1,10 @@
 #!/usr/bin/env bash
-set -eu
-outfile="out/out.zip"
+. "$(cd "$(dirname "${BASH_SOURCE[0]}")" && pwd)/common"
+common_setup
+outfile="${common_out_dir}/lkmc-${common_sha}.zip"
 rm -f "$outfile"
 for arch in x86_64 arm aarch64; do
-  img_dir="out/${arch}/buildroot/images"
-  rm -f "${img_dir}/rootfs.ext2"
-  zip -r "$outfile" "${img_dir}"
+  common_setup
+  rm -f "${common_images_dir}/rootfs.ext2"
+  zip -r "$outfile" "$common_images_dir"
 done