Set lab settings to two network providers

Now we will use two different network providers on our CI servers:
nova-network and neutron. So, we need different settings for this.
Also, some jobs need to run on neutron, another jobs - on nova-net.

Change-Id: I6d896eab0e652cdf4111fb8b3e6206562b368fb2
Merge "Set lab settings to two network providers"