[Refactor] - update code
1.inherited the MigoLuigiHdfs instead of luigi.hadoop.JobTask
2.remove use_hadoop variable (it already exists in MigoLuigHdfs)
3.use keep_time variable instead of is_delete
4.use src instead of source
5.use dest instead of destination
6.inherited the remove_files instead of initialized
7.use the MIGO_STAMP_FOR_ERROR_RECORD variable for "Error" words
Merge branch 'NES_LRFM' of github.com:migocorp/athena into NES_LRFM