Comment 3 for bug 1794863

Reviewed: https://review.openstack.org/606982
Committed: https://git.openstack.org/cgit/openstack/stx-metal/commit/?id=3f337d5edb1fe2a6efa1d64d58e221017e165f0b
Submitter: Zuul
Branch: master

commit 3f337d5edb1fe2a6efa1d64d58e221017e165f0b
Author: Kristine Bujold <email address hidden>
Date: Mon Oct 1 11:14:25 2018 -0400

    Fix bug with PXE Boot Server

    The UEFI grub config file used for PXE Boot Server containes a mixed
    of menuentry and submenu. A submenu opens a new context and global
    variables cannot be used within them
    https://bugs.launchpad.net/ubuntu/+source/grub2/+bug/1175127. This
    was causing pxe_root to be empty for submenus selections. Moving
    '1) UEFI Boot from hard drive' into a submenu fixes this problem and
    also removes the need to save the root variable. This was previously
    required when a user would select boot from hard drive and the hard
    drive did not exist, root would no longer be set to the pxeboot
    server and selecting the other menu entries would fail.

    Remove the '1)' prefix in the 'Boot from hard drive' menu option in
    both Legacy and UEFI boot as this is not used by other menues.

    Closes-Bug: 1794863

    Change-Id: I5bc62039bfb68477e9cd0166ce17877693037640
    Signed-off-by: Kristine Bujold <email address hidden>