Add binding:host_id when creating port for probe

When probe is created it needs to have correct bindings otherwise port
is marked as dead.

Change-Id: If542b715756ccfed548ec89a97742fda2ad9b454
Partial-Bug: #1262785
Merge remote-tracking branch 'upstream/stable/havana' into stable/havana-shashank
Merge branch 'stable/havana-shashank' of github.com:aristanetworks/neutron into stable/havana-shashank