clickos: Removed limited config size.

The limitation refered in #10 was an artifact
with regard to an old version of cosmos/clickos.
Configurations can now have *any* size.

Signed-off-by: Joao Martins <joao.martins@neclab.eu>
xcl: Fix warning on transaction init

Signed-off-by: Joao Martins <joao.martins@neclab.eu>