Synced with OVN 22.06 branch.
    
    Below are the fixes.
    - tests: Enable vif-plug tests and fix the vif-provider.
    [Upstream: c4803488bc58e3845b3155ec859359466f44b17e]
    
    - ovn-ctl: Ensure that log/run directory have correct permission (#2113855)
    [Upstream: 49b456e4b75debb29bcf8d4915d535904924edff]
    
    - ofctrl.c: mff_ovn_geneve should be available at state WAIT_BEFORE_CLEAR.
    [Upstream: aa8c535a1faf4bd3c0494edce1e9dda8a0251263]
    
    - controller: Fix IPv6 prefix delegation (#2108726)
    [Upstream: bd7ce24bd79b2411fdc5d8ef0abb292ebedbe8df]
    
    - system-tests: Reduce flakiness of IPv6 prefix delegation (#2108726)
    [Upstream: b340d5d3af352ea4ece64b93e2bd59396586c217]
    
    - northd: handle virtual lport type update (#2099288)
    [Upstream: 49b73c3504f78a26afa84b79c5d52bd9b224348f]
    
    Signed-off-by: Numan Siddique <numans@ovn.org>
    (cherry picked from commit 1aa1531416a393592c481d78325289c31436086f)