TBD-988: remove the unnecessary config files
https://jira.talendforge.org/browse/TBD-988
[TBD-990]
Fix missing description.
Merge branch 'maintenance/5.6' of ssh://github.com/Talend/tbd-studio-se into maintenance/5.6
[TBD-62]
Add EMR 2.4.0 connection on DI tHDFS component.

Full list :
tHDFSCompare
tHDFSCopy
tHDFSDelete
tHDFSExist
tHDFSGet
tHDFSList
tHDFSProperties
tHDFSPut
tHDFSRename
tHDFSRowCount
[TBD-62]
Fix Jar dependancies' REQUIRED_IF.
[TBD-62]
Start the implementation of amazon EMR 2.4.0 on tSqoopImport Component.
[TBD-62]
Allow connection to Amazon EMR 2.4.0 to all sqoop components.
TBD-1022: remove pig dependencies from the pigmap, add auto-download if
libs are not included, and try to retrieve from package if possible.