Merge tier-1 to the toplevel

Now we just have a minimal base, and what was tier-1 is now
just the default content.

We still do capture the previous conception of "tier-x" in
`packages-recommended-minimal.txt` so that people starting
from scratch can install using that.

Signed-off-by: Colin Walters <walters@verbum.org>

usr/lib/dracut/dracut.conf.d/30-bootc-full.conf

@@ -0,0 +1 @@
+add_dracutmodules+=" lvm crypt fips "

usr/lib/systemd/system-preset/05-bootc.preset

@@ -0,0 +1,7 @@
+# Our fallback
+enable bootc-generic-growpart.service
+
+# We enable this by default just so we can say we have automatic
+# updates on by default, like CoreOS. It's very much intended
+# to be tweaked or replaced outside of trivial scenarios though.
+enable bootc-fetch-apply-updates.timer

usr/lib/systemd/system/bootc-generic-growpart.service

@@ -0,0 +1,22 @@
+[Unit]
+Description=Bootc Fallback Root Filesystem Grow
+Documentation=https://gitlab.com/fedora/bootc/docs
+# For now we skip bare metal cases, and we also have nothing to do
+# for containers.
+ConditionVirtualization=vm
+# This helps verify that we're running in a bootc/ostree based target.
+ConditionPathIsMountPoint=/sysroot
+# For someone making a smaller image, assume they have this handled.
+ConditionPathExists=/usr/bin/growpart
+# We want to run before any e.g. large container images might be pulled.
+DefaultDependencies=no
+Requires=sysinit.target
+After=sysinit.target
+Before=basic.target
+
+[Service]
+ExecStart=/usr/libexec/bootc-generic-growpart
+# So we can temporarily remount the sysroot writable
+MountFlags=slave
+# Just to auto-cleanup our temporary files
+PrivateTmp=yes

usr/libexec/bootc-generic-growpart

@@ -0,0 +1,44 @@
+#!/bin/bash
+set -eu
+
+backing_device=$(findmnt -vno SOURCE /sysroot)
+echo "Backing device: ${backing_device}"
+
+# Handling devicemapper targets is a whole other thing
+case $backing_device in
+    /dev/mapper/*) echo "Not growing $backing_device"; exit 0 ;;
+esac
+
+syspath=/sys/class/block/$(basename "${backing_device}")
+if ! test -d "${syspath}"; then
+    echo "failed to find backing device ${syspath}"; exit 1
+fi
+
+
+
+# Note that we expect that the rootfs is on a partition
+partition=$(cat "${syspath}"/partition)
+
+# Walk up to find the parent blockdev
+parentpath=$(dirname "$(realpath "${syspath}")")
+devmajmin=$(cat "${parentpath}"/dev)
+parent="/dev/block/${devmajmin}"
+
+# Grow the partition
+tmpf=$(mktemp)
+# Ignore errors because growpart exits 1 if nothing changed;
+# we need to check the output for NOCHANGE:
+if ! /usr/bin/growpart "${parent}" "${partition}" > "${tmpf}"; then
+    cat "${tmpf}"
+    if grep -qEe '^NOCHANGE: ' "${tmpf}"; then
+        exit 0
+    fi
+    echo "growpart failed"
+    exit 1
+fi
+cat "${tmpf}"
+# Now, temporarily remount the sysroot writable in our mount namespace
+mount -o remount,rw /sysroot
+# And defer to systemd's growfs wrapper which handles dispatching on
+# the target filesystem type.
+/usr/lib/systemd/systemd-growfs /sysroot