The kernel names in puppet-update-grub-env.py is hardcoded
as amd64, use dpkg-architecture to check host arch and
replace the hardcoded names.
Test Plan:
PASS: build-pkgs on x86-64 host
PASS: build-image on x86-64 host
PASS: build-pkgs on arm64 host
PASS: build-image on arm64 host
PASS: install AIO-SX on x86-64 targets
PASS: install AIO-SX on arm64 targets
Story: 2010739
Task: 48284
Signed-off-by: Jackie Huang <jackie.huang@windriver.com>
Change-Id: I1df220f585f53e58f2fcd8f6918273f8ea45fb90