OVS agent tunnel interfaces are named via:
'%s-%s' % (tunnel_type, destination_ip)
This means that the tunnel interface name is not unique if
two OVS agents on the same machine try to form a tunnel with a
third agent. This happens during full stack tests that start
multiple copies of the OVS agent on the test machine.
Thus, for full stack tests, to make sure that the tunnel
interface names created by ovs agents are globally unique, they
will have the following format :
'%s-%s-%s' % (tunnel_type, hash of source IP, hash of dest IP)
Since this patch centralizes the formation of the tunnel interface
name in a dedicated method that is monkey patched by the full stack
framework, a unit test has been added for this method.
Co-Authored-By: Mathieu Rohon <mathieu.rohon@gmail.com>
Closes-Bug: #1467633
Change-Id: I991af6a5f982746cc297f0248454f803dfbb2daf
1a1ccb8c94