This configuration variable is added here: [1]. [1]cc05e16916/neutron/conf/agent/agent_extensions_manager.py (L25)Signed-off-by: Rodolfo Alonso Hernandez <ralonsoh@redhat.com> Change-Id: Iecac0b628161412bc3bf04b28963a8f8f04ef0b9 (cherry picked from commit9c079e57d0)