autoprovision: Install dch-autoprovision RPM

The `notify-online` script and corresponding systemd unit are now
available in an RPM.  This allowes them to be installed in different
scenarios, such as image builds, that do not use Anaconda/kickstart.

autoprovision.ks.j2

@@ -1,16 +1,7 @@
+%packages
+dch-autoprovision
+%end
+
 %post
-cat > /root/.ssh/authorized_keys <<EOF
-expiry-time="$(date -d +1hour +%Y%m%d%H%M)",restrict,pty ssh-ed25519 AAAAC3NzaC1lZDI1NTE5AAAAICoOO/ZYMxRgmyvqZwGN3NM5pHyh3NBdC7iZrXIopt93 Host Provisioner
-EOF
-
-cat > /usr/local/libexec/notify-online.sh <<'EOF'
-{% include "notify-online.sh" %}
-EOF
-chmod +x /usr/local/libexec/notify-online.sh
-
-cat > /etc/systemd/system/notify-online.service <<'EOF'
-{% include "notify-online.service" %}
-EOF
-
 systemctl enable --no-reload notify-online.service
 %end