Updated openstack/openstack
Project: openstack/nova  568f9b32268bb1fd08a53be20b2f073d8d58f840

VMware: validate the network_info is defined

Ensure that the network info is defined correctly prior to allocating
networks.

Commit 6fb9cc8b278ceab05e65e1c5145141203211d246 caused a degradation.

Change-Id: I74eddc0ff744ee5d80df825a52527c67583bacea