adding system var as well to remain consistent with other projects
adding system var as well to remain consistent with other projects

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