Handle seeded lxd snap with channel name for ubuntu-cpc:minimized (LP: #1889470)
The seed now specifies the lxd snap in focal as
'lxd=4.0/stable/ubuntu-20.04' which doesn't match the expectations of
the code with looks for lxd as the only snap in the seed for minimized
images. This patch updates the pattern to accept 'lxd' or 'lxd=*'.
snap_preseed: support channel specification with snap name
snap_name[/classic]=track/risk/branch is now the supported snap name
specification, which allows to specify the full default track and
optional classic confinemnt.
Supporting such specification in the seedtext allows one to specify a
better default channel. For example, this will allow lxd to switch
from latest/stable/ubuntu-20.04 to 4.0/stable/ubuntu-20.04 as 4.0 is
the LTS track matching 20.04 support timeframe.
(cherry picked from commit 7bae9201d20822d6875bcf5949e1fff839b8774c)
(cherry picked from commit 2976a99f292c500f39aace25ad08de21b37d7b31)
(cherry picked from commit d542e8e4a08467ef9b6237b9fcbd9166c8c99e8b)
Hack seeding of linux kernel in ubuntustudio/focal
ubuntustudio-default-settings in focal release has a Recommends to this
kernel, which makes it impossible to update the kernel later on, since
we would install the -updates and release kernel, which isn't allowed
and causes FTBFS. Hack out the focal-release kernel and let the rest of
the build process pull in the right one.
This should never be the case on a released cloud image.
These packages are marked for auto-removal because in the KVM image binary hook
we removed both initramfs-tools and busybox-initramfs packages. Due to package
dependencies this also removed:
But it did not remove all the packages that the above list depended on.
This resulted in all those packages being marked for auto-removal because they
were not manually installed nor did they have any manually installed packages
that depended on them.
The removal of initramfs-tools and busybox-initramfs was to avoid the
generation of initramfs in images that should boot initramfsless.
This requirement is obsolete now because the initramfsless boot handling
is now handled via setting GRUB_FORCE_PARTUUID in /etc/default/grub.d/40-force-partuuid.cfg.
In test images I have verified that GRUB_FORCE_PARTUUID is set and that
boot speeds have not regressed.
