del-image-minimal is the command line non graphical busybox based minimal
root filesystem for Digi Embedded Linux.
It uses a base task-del-core task, and defines core-ssh-dropbear as image
feature. It also will default to using shadow passwords unless
debug-tweak is selected in which case root can log in with an empty
password.
Signed-off-by: Alex Gonzalez <alex.gonzalez@digi.com>