Accepting request 585948 from home:fos:branches:Base:System

For health-checker (https://build.opensuse.org/package/show/devel:CaaSP/health-checker) an additional flag is used to exchange information between GRUB and user space; as suggested by Michael this patch will enable writing that specific variable into the GRUB environment block.

- Store GRUB environment variable health_checker_flag
  in Btrfs header
- Rename grub2-btrfs-workaround-grub2-once.patch to
  grub2-grubenv-in-btrfs-header.patch (as the original 
  filename was too specific - the patch is not only
  storing the next_entry flag only in the Btrfs
  header now)

OBS-URL: https://build.opensuse.org/request/show/585948
OBS-URL: https://build.opensuse.org/package/show/Base:System/grub2?expand=0&rev=293

grub2.spec

@@ -197,7 +197,7 @@ Patch58:        grub2-xen-linux16.patch
 Patch59:        grub2-efi-disable-video-cirrus-and-bochus.patch
 Patch60:        grub2-editenv-add-warning-message.patch
 Patch61:        grub2-vbe-blacklist-preferred-1440x900x32.patch
-Patch64:        grub2-btrfs-workaround-grub2-once.patch
+Patch64:        grub2-grubenv-in-btrfs-header.patch
 Patch65:        grub2-mkconfig-aarch64.patch
 Patch70:        grub2-default-distributor.patch
 Patch71:        grub2-menu-unrestricted.patch