Require a non-zero timeout when WaitForAll
Require a non-zero timeout when WaitForAll

Otherwise requests are almost bound to fail - there's no good reason for this
config.

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