PDI-11582: Add initial hdp21 shim
[PDI-11582]: Updated hdp21 Ivy deps for HBase
[PDI-11582]: Fixed ivy dependencies for Xerces
PDI-11582 - Add default location for MR's jobhistory server
[PDI-11582] added  HDP21 to the list of modules needed to build
[PDI-11582] Support cross-platform MR jobs
Merge pull request #119 from pavel-sakun/PDI-11582

PDI-11582 - HDP 2.1 Linux Shim Support (Unsecure)