jsonrpc: Host_setupNetworks

Align naming between API.py and schema.

Change-Id: Id3b4bef7cd654afa5eceb9d4cc5ce3e7d15d6e54
Signed-off-by: pkliczewski <piotr.kliczewski@gmail.com>
Reviewed-on: http://gerrit.ovirt.org/35527
Reviewed-by: Dan Kenigsberg <danken@redhat.com>