2021.11-SC1 Public Release

This release was produced using the Debian 10 based
WINE Docker build container configuration generated
using Dedicated User Environment (DUE) version 2.4.0

Instructions and source for replicating this ANGIE build
environment are available at:
https://github.com/CumulusNetworks/DUE

Errata
=======
ONLY the emulation platforms: fame_x86_64 and qemu_armv8a are
updated to build for this release using a Debian 10 container.

Individual platforms will have to be updated and validated
by their vendors to use the updated components and features.
(see below)

To build platforms for older releases, use a Debian 9
container and the 2021.08 branch.

New Hardware Platforms
======================
qemu_armv8a now works

Build and Release / Improvements
================================
Component upgrades (requires a Debian 10 build environment)
 Linux kernel 5.4.86
 GRUB         2.04
 kexec-tools  2.0.22
 uClibc-ng    1.0.38
 e2fsProgs    1.46.3
 util-linux   2.37.2
 efibootmgr   16
 btrfs-progs  4.9.1
 parted.make  versions 3.1 and 3.4 for x86 and ARM64

Bug Fixes / Improvements
=========================
 Secure Boot Support
 Secure GRUB Support
 ONIE Password option
 UEFI Fallback recovery
 ./encryption directory added to demonstrate key generation
   and signed binaries
 ./emulation directory added to simplify running the
 kvm_x86_64 and qemu_armv8a targets.

Closed #971, #972. Both were user build environment configuration
issues.

Misc:
=====
 A video tutorial demonstrating build with Secure Boot is
  available at:
   https://youtu.be/Oq4FWw9lkwQ