remove existing dist dir and tgz before build
remove existing dist dir and tgz before build

mesosphere/hdfs,Banno/hdfs,ryane/hdfs,dmitrypekar/hdfs,LLParse/hdfs,nalingarg2/hdfs,dmitrypekar/hdfs,andrewrothstein/hdfs,ryane/hdfs,edgefox/hdfs,andrewrothstein/hdfs,mesosphere/hdfs,LLParse/hdfs,jan-zajic/mesos-hbase,smorin/hdfs,jan-zajic/mesos-hbase,jmlvanre/hdfs,kensipe/hdfs,jan-zajic/mesos-hdfs,edgefox/hdfs,nalingarg2/hdfs,jmlvanre/hdfs,Banno/hdfs,kensipe/hdfs,jan-zajic/mesos-hdfs,smorin/hdfs