Increase the depth of timestream.yml config file

This in order to get to general.metas.id.
* scripts/run-pipeline.py (genConfig): Call append with depth = 2.
* timestream/manipulate/configuration.py (PCFGConfig.createSection): Include a
section as a dictionary only when the dictionary is all indexed by strings.
Create PCFGListSection for pipeline and outstreams only.
Eliminate the "-" between outsuffix and outstream

* scripts/run-pipeline.py (genContext): Subject.
* timestream/manipulate/pipecomponents.py (ResultFeatureWriter.__init__):
Subject. We add a "-" separator in the csv output as it is no longer in the
suffix.