Expose timestamp attributes on trunk API

These are available in the data model, but they are not
currently exposed. This patch exposes them so that the
user can see when trunks were created and/or updated.

Partially-implements: blueprint vlan-aware-vms

Change-Id: Id50c999eb1610e1ee2cdd52c0bb6d7a9099d35da
1 file changed
tree: 262fec8b122738e6197d677e54fbe1ed6ee93c8a
  1. neutron/