Added --enable-omkafka back and added --enable-imkafka to configure
options. Only if both are enabled, kafka tests can be used and run.
testbench: replaced old kafka tests with new ones using imkafka/omkafka
imkafka: Added support to custom parameters from confParam
confParam works simular like in omkafka and can be used to set
custom parameters.
testbench: Added missing new kafka testfile
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