Gridmix distributed cache emulation system tests.

1.Verify the emulation of HDFS and Local FS distributed cache files against the given input trace file.
2.Verify the Gridmix emulation of HDFS distributed cache files of different visibilities.
3.Verify the Gridmix emulation of HDFS distributed cache file which uses different jobs that are submitted with different users.
4.Verify the emulation of local FS distributed cache files.
5.Verify the Gridmix emulation of HDFS private distributed cache file.
6.Verify the Gridmix emulation of HDFS public distributed cache file.
7.Verify the Gridmix emulation of Multiple HDFS private distributed cache files.
8.Verify the Gridmix emulation of Multiple HDFS public distributed cache files.