Implementing streaming MapReduce jobs

Adding support for new dotted job type MapReduce.Streaming.
The new job type will let the dashboard know to display some
job configuration items that are only applicable to this new
job type.

Implements:  blueprint dashboard-edp-streaming-mapreduce

Change-Id: Ia3ebaf41b3f153b927002dc2350af79bc7d86747
Merge "Implementing streaming MapReduce jobs"