Updated openstack/openstack
Project: openstack/neutron  743c40fa10451960996d3612665eb744fa011c68

NSX: replace strong references to the plugin with weakref ones

This is done in accordance to a refactoring done in change 92793.

Partial-bug: #1234857

Change-Id: Iaf2bc93182c01e62bb755b4e3f104f5a926b73fc