CDAP-654: Added a unit test which tests Services integration with MapReduce
CDAP-654: addressed comments
CDAP-654: minor fixes
CDAP-654: changes in javadocs
CDAP-654: refactored setup method of mapper and reducer
CDAP-654: minor fixes
Copy from 2.5-based feature/remove-missing-dirs-dockerfile branch
Remove SSH due to requiring shared password
CDAP-654: added copyright
Merge remote-tracking branch 'upstream/release/2.6.0' into CDAP-654
CDAP-654: fixed checkstyle issues
Comment fix
Fix upgrade tools command.
Merge pull request #785 from caskdata/feature/r2.6.0_fix_admin_manual

Fix upgrade tools command.
Merge pull request #720 from cybervisiontech/CDAP-654

CDAP-654: Add a unit test which tests Services integration with MapReduce
Use ENTRYPOINT and fix tail
Merge pull request #780 from caskdata/feature/docker-cleanups26

[Docker] Feature/docker cleanups26
(CDAP-864) Make class loading of byte code generated classes aware of classes that needs to be preserved with the original ClassLoader
Merge pull request #784 from caskdata/hotfix/bytecode-classloader

(CDAP-864) Fix classloading in unit-test mode
Merge branch 'release/2.6.0' into develop