Updated armband

Updated armband
Project: fuel  a18091f9f2a5b1ba34f38f7119eaf7f4cdfaff02

docs: build req: Remove p7zip-full

p7zip-full is not required for building, as stated in the current
version of the docs. I think this bogus requirement was introduced
by Armband (by me, more precisely) because our build process was
happening outside docker.

Sorry for the useless code churn.

Change-Id: Id0a3c5b9016706535ca159e1da261e83c8d36d31
Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>
(cherry picked from commit de6d5d4b6ba6848304d620e65ad97f3aeeadccd5)