lbuxton: Fix bug of changing key type

When calling set_label, it is insane to change the type
of the key.

Change-Id: I8dd5a54a7045341dfad8b84f76c537ffa9da172a
Signed-off-by: José Bollo <jose.bollo@open.eurogiciel.org>
core: removing fake setting of the type

When setting labels, the type of the key doesn't matter.

Change-Id: I446f64fc09bd435b8986e9d8312269c25764ea8c
Signed-off-by: José Bollo <jose.bollo@open.eurogiciel.org>
buxtonctl: improve setting of labels

Setting the type of the key for setting its label
is a non sense.

Change-Id: I85c84a476a1e84c7ed4537a753065daf44a89864
Signed-off-by: José Bollo <jose.bollo@open.eurogiciel.org>