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).