07a3312f17, which introduced this in
October of 2014, didn't have zpool export -a available; we do
Upstream-commit: 6a41310c70
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Ahelenia Ziemiańska <nabijaczleweli@nabijaczleweli.xyz>
Closes#13093