Fixup mesos client, add back existing HDFS file handling to HDFSHelper.
Fixup mesos client, add back existing HDFS file handling to HDFSHelper.





thinker0/aurora,wfarner/aurora,medallia/aurora,rdelval/aurora,apache/aurora,wfarner/aurora,apache/aurora,medallia/aurora,crashlytics/aurora,mkhutornenko/incubator-aurora,protochron/aurora,kidaa/aurora,kidaa/aurora,protochron/aurora,mkhutornenko/incubator-aurora,mkhutornenko/incubator-aurora,apache/aurora,thinker0/aurora,rdelval/aurora,kidaa/aurora,rdelval/aurora,mschenck/aurora,apache/aurora,thinker0/aurora,shahankhatch/aurora,shahankhatch/aurora,rosmo/aurora,mschenck/aurora,rosmo/aurora,shahankhatch/aurora,protochron/aurora,mschenck/aurora,apache/aurora,rosmo/aurora,medallia/aurora,rdelval/aurora,mkhutornenko/incubator-aurora,wfarner/aurora,mkhutornenko/incubator-aurora,rosmo/aurora,rdelval/aurora,wfarner/aurora,shahankhatch/aurora,shahankhatch/aurora,protochron/aurora,wfarner/aurora,thinker0/aurora,apache/aurora,medallia/aurora,medallia/aurora,mschenck/aurora,mschenck/aurora,crashlytics/aurora,crashlytics/aurora,thinker0/aurora,shahankhatch/aurora,crashlytics/aurora,thinker0/aurora,medallia/aurora,mschenck/aurora,protochron/aurora,kidaa/aurora,kidaa/aurora,rosmo/aurora,rosmo/aurora,kidaa/aurora,crashlytics/aurora,crashlytics/aurora,protochron/aurora,wfarner/aurora,rdelval/aurora