Version 0.8.1.7 for emqx 4.3.x

chore: fix appup

Version 0.7.10

fix(locker): the locker crashed when trying to release locks

fix: etcd ssl enable flag

Merge pull request #123 from qzhuyan/fix/william/etcd-ssl-enable-check

fix(etcd): check ssl enable

fix emqx/emqx#5254

fix emqx/emqx#5254
backport to 4.3

remove 0.8.3

0.9.0

fix: terminate with close

Fix locker mechanism

Fix the locker mechanism