Setting timestamp to 0 now lets kafka handle this.
Also added "RD_KAFKA_V_KEY(NULL,0) if no key is configured.
testbench: Changed kafka server configuration "log.retention.hours"
property to 5000 which avoids that the log cleaner is deleting our
records before they can be processed.
Fixed some issues with sndrcv kafka tests.
Generating kafka topics dynamically now it kafka tests.
Limited messagecount in some tests to 50000 for now.
Fixed test configurations (socket timeouts with newer kafka).
Reactivated some kafka tests that work now.
omkafka: Fixed "closeTimeout" setting in action shutdown
Basic features need to be added now.
testbench: Added kafka test with multi kafka instances
All kafka instances are connected to one zookeeper instance.
Diag script has been adjusted to propper start/stop single
kafka instances.
autotools: Added version check for librdkafka to be higher than 0.9.1