Fixes issue where loadbalancer is None in flow
Fixes issue where loadbalancer is None in flow

A task was saying it provided LOADBALANCER but it wasn't returning
anything, so it overwrote the LOADBALANCER with None.

Change-Id: I8274832b5bfbabdf29f2491a5a7591e0817f6345
Closes-Bug: #1453945

openstack/octavia,openstack/octavia,openstack/octavia