Backport few bug fixes.
    
    Backported the following patches:
    - ic: learn routes to LR only from corresponding transit switch
    - Support additional 'iface-id-ver' options in OVS inteface for claiming an lport.
    - controller: Don't allocate zone ids for non-VIF port bindings.
    - northd: Add VIP port to established flows in DNAT table for Load Balancers
    
    Signed-off-by: Numan Siddique <numans@ovn.org>