add check if uid is defined to customize kafka users uid
add check if uid is defined to customize kafka users uid

cerner/cerner_kafka,pradeepbhadani/cerner_kafka,PaytmLabs/chef-cerner_kafka,TD-4242/cerner_kafka,pradeepbhadani/cerner_kafka,TD-4242/cerner_kafka,cerner/cerner_kafka,TD-4242/cerner_kafka,cerner/cerner_kafka,pradeepbhadani/cerner_kafka,PaytmLabs/chef-cerner_kafka,PaytmLabs/chef-cerner_kafka