[Merge] ~ubuntu-core-dev/shim/+git/shim-signed:sil2100/auto-nvram-bionic into ~ubuntu-core-dev/shim/+git/shim-signed:bionic

[Łukasz Zemczak]

Łukasz Zemczak has proposed merging ~ubuntu-core-dev/shim/+git/shim-signed:sil2100/auto-nvram-bionic into ~ubuntu-core-dev/shim/+git/shim-signed:bionic.

Commit message:
Backport fixes for supporting --auto-nvram from cosmic.

Requested reviews:
  Ubuntu Core Development Team (ubuntu-core-dev)
Related bugs:
  Bug #1778848 in grub2 (Ubuntu): "Support for grub upgrades with bios+uefi bootloader targets"
  https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1778848

For more details, see:
https://code.launchpad.net/~ubuntu-core-dev/shim/+git/shim-signed/+merge/348584

Backport fixes for supporting --auto-nvram from cosmic.
-- 
Your team Ubuntu Core Development Team is requested to review the proposed merge of ~ubuntu-core-dev/shim/+git/shim-signed:sil2100/auto-nvram-bionic into ~ubuntu-core-dev/shim/+git/shim-signed:bionic.