Add a pkg-map to install cloud-initramfs-growroot on Precise, as it is
required there because the kernel is too old to use growroot on a live
file-system. This was generically removed in
e23b087505.
Change-Id: I5e6cbc4b74dc72a6f23f73a018c028f3ff7c0157
debootstrap is not debian or ubuntu specific. We can make a debootstrap
element that knows how to do all of the things, and then a
debian-minimal and ubuntu-minimal image that use it. Finally, make
the debian element simply be a collection of the extra things we do to
make it look like a cloud-init based cloud image.
Change-Id: Iaf46c8e61bf1cac9a096cbfd75d6d6a9111b701e