Comment 27 for bug 1437353

The MAAS CI has built new images using -proposed, which includes the bootloaders (and hence, grub from -proposed):

{
 "content_id": "com.ubuntu.maas:daily:1:bootloader-download",
 "datatype": "image-downloads",
 "format": "products:1.0",
 "products": {
  "com.ubuntu.maas.daily:1:grub-efi-signed:uefi:amd64": {
   "arch": "amd64",
   "arches": "amd64",
   "bootloader-type": "uefi",
   "label": "daily",
   "os": "grub-efi-signed",
   "versions": {
    "20180424.0": {
     "items": {
      "grub2-signed": {
       "ftype": "archive.tar.xz",
       "path": "bootloaders/uefi/amd64/20180424.0/grub2-signed.tar.xz",
       "sha256": "c36c148eba15eda8af4e300af1d382a13595acac41db521d86f40c6ae789b57b",
       "size": 284308,
       "src_package": "grub2-signed",
       "src_release": "xenial",
       "src_version": "1.66.18+2.02~beta2-36ubuntu3.18"
      },
      "shim-signed": {
       "ftype": "archive.tar.xz",
       "path": "bootloaders/uefi/amd64/20180424.0/shim-signed.tar.xz",
       "sha256": "22e8518eaa8e5a55ec188976e8b6e01da797df65a6143bcb741a7cf432d30c28",
       "size": 308604,
       "src_package": "shim-signed",
       "src_release": "xenial",
       "src_version": "1.33.1~16.04.1+13-0ubuntu2"
      }
     }
    }

Our CI completed successfully with this.