pkgsel calls update-initramfs without proper chroot

[Brandon Gilmore]

Affects: pkgsel-0.35ubuntu2
Description: Ubuntu 12.04 LTS
Release: 12.04

pkgsel's postinst attempts to invoke update-initramfs inside a /target chroot during the system install process. That chroot gets bind mounts for /dev, /sys, and /proc, but it is notably missing a bind mount for /run. Some of the initramfs-tools update hooks depend on the presence of a proper /run filesystem and break badly when it is missing. In our configuration, the cryptsetup hook fails to scan for encrypted volumes which renders the initrd unable to boot hosts with an encrypted root filesystem.

pkgsel should probably be using in-target for this step in lieu of doing its own chroot logic.