Fixing bug: centroids failed for clusters with summary fields

Changing max_bins attribute in local model to private

Bug fixing: local ensemble for JSON files and stored ensemble structures

Fixing some test changes to adapt to backend changes in clusters and …

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Bug fixing: source uploading failed for python older than 2.7.9

Deleting leftover and enlarging tests timeouts

Updating version to 1.9.8

Typo in comments

Adding new environment variables to control customized private installs

Version bump