MINOR: stktable: add stktable_deinit function

Adding sktable_deinit() helper function to properly cleanup a sticktable
that was initialized using stktable_init().

(cherry picked from commit e10cf61099a654b5eaf4b92e0e01e315fda6d116)
Signed-off-by: Christopher Faulet <cfaulet@haproxy.com>
3 files changed