Altimeter

* Allow specifying tcp keep alive on lambda invoke
* Additional scan logging

* Allow specifying tcp keep alive on lambda invoke
* Additional scan logging

* Added functionality to create a property graph model of resources in addition to the RDF model
* Added functionality that will directly write the outputs of both the RDF and PG models into a specified Neptune cluster both with and without IAM authentication enabled

Note that NeptuneClient now uses SSL by default. This is controlled by a boolean configuration parameter neptune.ssl

* Added functionality to create a property graph model of resources in addition to the RDF model
* Added functionality that will directly write the outputs of both the RDF and PG models into a specified Neptune cluster both with and without IAM authentication enabled

Note that NeptuneClient now uses SSL by default. This is controlled by a boolean configuration parameter neptune.ssl

Adds json2hyper.py. This converts Altimeter intermediate JSON to a hyper file consumable by Tableau.