dracut.module/dracut.conf.in: Change the templates for key and certificate path. Add some variables.
	installation/dependencies.sh: Do not copy the local flb.conf.in in fluent-bit repertory anymore.
	installation/env.sh: Add variables for the key and certificate pathes and names.
	installation/install.sh: Change the dracut_conf_regex accordingly.
	uefi-keys/make_keys.sh: Add a similar header than the installation/ scripts (for instance, source installation/env.sh).

- Move the public keys in another repository. Reorganize the key directories.
- Update the key creation accordingly.

dracut.module/dracut.conf.in: Add templates for the network related kernel command-line parameter.
installation/env.sh: Change the wendelin reference.

- Acquire an IPv4 statically during the initramfs stage.
- Do not sign the image (temporary).

- Stop copying the EFI directory.
- Fix the variables locating the EFI material.

- Add function to automatically retrieve the paths of a partition (based on its type and "fdisk -l" output).
- Add a function to automatically retrieve the UUID of a partition (based on its type and the previous function's output).
dracut.module/dracut.conf.in:
- Identify the root partition with its UUID in the kernel command line parameter.
test.sh: Remove the file.

installation/env.sh: Roll back to previous distribution handling (i.e. before the Debian 10 problem).

- Move packages.sh to env.sh, modify the other files accordingly.
- Find git root in a simpler way.
- Add a shebang where appropriate.

- Support easy removing of the packages dependencies.
- Improve detection of the repository root.

Note: For now, this configure script is very basic and non-standard.

- Fix a bug: correct display while running initramfs.
- Add a model kernel command (which fixes the bug).