Rake simple integration test was failing with: 'run_command': sh: -c: line 0: syntax error near unexpected token /Users/valerio.aputini/work/project/poseidon_v-a/spec/bin/kafka-run-class.sh org.apache.zookeeper.server.quorum.QuorumPeerMain /Users/valerio.aputini/work/project/poseidon_v-a/tmp//config/zookeeper.properties &>> /Users/valerio.aputini/work/project/poseidon_v-a/tmp//log/zookeeper.log & echo  > /Users/valerio.aputini/work/project/poseidon_v-a/tmp//pid/zookeeper.pid'