Changed FeatureStore to list of in mem Factsets
Merge pull request #211 from ambiata/topic/feature-store-in-mem

Changed FeatureStore to list of in memory Factsets
removed the repository runners
simplified the IvoryRunner
pushed the codec parameter to the RepositoryConfiguration
removed the redundant setting of the compression in the snapshot cli app
using a non-lazy s3Client
made the repository configuration transient to avoid it being serialized in scoobi jobs