Fix TACHYON-170: add required dependecies when running TestDFSIO with Hadoop 1.0.4 in local mode

Because using "test" results this error message:  

[ERROR] COMPILATION ERROR : 
[INFO] -------------------------------------------------------------
[ERROR] /Users/pxuan/project/tachyon/branches/master/core/src/main/java/tachyon/master/JsonObject.java:[7,39] package org.apache.commons.codec.binary does not exist
[ERROR] /Users/pxuan/project/tachyon/branches/master/core/src/main/java/tachyon/io/Utils.java:[10,39] package org.apache.commons.codec.binary does not exist
[ERROR] /Users/pxuan/project/tachyon/branches/master/core/src/main/java/tachyon/master/JsonObject.java:[60,28] cannot find symbol
  symbol:   variable Base64
  location: class tachyon.master.JsonObject
[ERROR] /Users/pxuan/project/tachyon/branches/master/core/src/main/java/tachyon/master/JsonObject.java:[72,35] cannot find symbol
  symbol:   variable Base64
  location: class tachyon.master.JsonObject
[ERROR] /Users/pxuan/project/tachyon/branches/master/core/src/main/java/tachyon/io/Utils.java:[42,14] cannot find symbol
  symbol:   variable Base64
  location: class tachyon.io.Utils
[ERROR] /Users/pxuan/project/tachyon/branches/master/core/src/main/java/tachyon/io/Utils.java:[46,14] cannot find symbol
  symbol:   variable Base64
  location: class tachyon.io.Utils