Samarth

changes in regression to take care of https://issues.apache.org/jira/browse/FALCON-280

pls take look at latest commits since i have remove the changes made in initial commits
i think we should only keep those properties in IEntityManager which vary from cluster to cluster ( ie specific to falcon server , like oozie, hdfs end point etc). Since above properties are completely optional and valid throughout regression , it might be a bad idea  to load them into IEntityManager again and again.