Kafka will not process SIGTERM if it's trying to connect to Zookeeper

[Aragao, Andre Augusto de Oliveira (Andre)]

Apparently, Kafka ignores SIGTERM sign if it’s trying to connect to Zookeeper 
and can’t reach it.

I can end it normally with kill –s TERM $PID under normal operation, but not 
when it’s trying to reconnect.

I know it’s a small issue that will almost never happen, but it would be nice 
if it could be fixed.

I’m using CENTOS 6.8 with kafka.2.12-0.11.0.0 and OpenJDK 1.8 (0.51).

Andre