Don't disconnect tmp broker when creating client
Don't disconnect tmp broker when creating client

Add a comment explaining the weird and messy reason why not, and what potential
side-effects it could have.

betable/sarama,raisemarketplace/sarama,LastManStanding/sarama,scalingdata/sarama,mailgun/sarama,vrischmann/sarama,VividCortex/sarama,jepst/sarama,kmiku7/sarama,raisemarketplace/sarama,pronix/sarama,vrischmann/sarama,sclasen/sarama,cep21/sarama,remerge/sarama,remerge/sarama,HelixEducation/sarama,jimmykuo/sarama,aybabtme/sarama,HelixEducation/sarama,gyroscope-innovations/legacy_sarama,jepst/sarama,aybabtme/sarama,xiaotianlis/sarama,Neuw84/sarama,rafrombrc/sarama,Shopify/sarama,uovobw/sarama,rafrombrc/sarama,VividCortex/sarama,cep21/sarama,scalingdata/sarama,winlinvip/sarama,LastManStanding/sarama,DataDog/sarama,Shopify/sarama,crast/sarama,yangfan876/sarama,DataDog/sarama,kraveio/sarama,gyroscope-innovations/legacy_sarama,uovobw/sarama,Neuw84/sarama,mailgun/sarama,pronix/sarama,crast/sarama,yangfan876/sarama,kmiku7/sarama,winlinvip/sarama,kraveio/sarama,betable/sarama,jimmykuo/sarama