Updated git submodules

Updated git submodules

Project: netvirt master a13bc037ff558d61e33b28dabd767671a4504321

elanmanager: clean up Futures collections

This patch replaces lists of Futures with singleton lists where
possible. It also removes instances of passing such lists around,
using return values instead.

This patch also cleans up the job classes generally: instance fields
are final where possible, unused fields and parameters are removed.

Change-Id: I8db42f96867b61e46eaf229f95d06c7f6b6249f0
Signed-off-by: Stephen Kitt <skitt@redhat.com>