Changelog v22.12.2

daa3d8b9 Set release date for 22.12.2.
9045a780 northd: check if parent_name is set for tag_request 0
6d5700d6 ofctrl: Prevent conjunction duplication
6b8d94b4 ofctrl: Do not try to program long flows
8ef0ee43 northd: Always ct commit ECMP symmetric traffic in the original direction.
427d60b7 Use correct nw_ttl=255 to match against legit NAs
8f06142d checkpatch: Ignore yml files when checking line lengths.
133761a5 northd: Make sure that skip_snat=true is evaluated before force_snat
08047a59 Prepare for 22.12.2.