public static Builder create(File workDir) {
    return new Builder(workDir);
  }
create a cluster instance using a builder which will expose configurable options
@param workDir working directory ManyMiniCluster will use for all of it's *Minicluster instances
@return a Builder instance
itests/hcatalog-unit/src/test/java/org/apache/hive/hcatalog/hbase/ManyMiniCluster.java