fix center handle ssn after node restart.

lichao

2021-04-26 150e192a7ddf19783a0f4a81b87d270c0812277a

 .gitignore

@@ -6,7 +6,8 @@
utest/utest
*.bak
gmon.out
box/bhshmqbox
box/bhshmq_center
box/help
utest/bhshmq_center
*/bhshmq_center
*/help
*/bhshmqbox
*/bhshmq_status
.idea