[VOTE] KIP-1092: Extend Consumer#close with an option to leave the group or not

[TengYao Chi]

Hi everyone,

Based on our discussion
<https://lists.apache.org/thread/023mo7lk1vfvljjoovwbzwmw9wvf5t6m>
 regarding KIP-1092 <https://cwiki.apache.org/confluence/x/JQstEw>, I
believe this KIP is now ready for a vote.

Sincerely,
TengYao