Add test for dead leader at broker.offset
Add test for dead leader at broker.offset

Signed-off-by: Oleg Bulatov <0ccb0f70e96003142a2cd5b687411c03cf199fb1@yandex-team.ru>

dropbox/kafka,liftoffio/go-kafka,danieltahara/kafka,optiopay/kafka,liftoffio/go-kafka,alexcesaro/kafka,husio/kafka,legionus/kafka,dropbox/kafka,zorkian/kafka,alexcesaro/kafka,zorkian/kafka,taheris/kafka,legionus/kafka,danieltahara/kafka,taheris/kafka,optiopay/kafka,husio/kafka