store pasties in elasticsearch database

[cvandeplas]

Add an option to store the pasties in an elasticsearch database

[adulau]

The indexing option is now part of the AIL framework. https://github.com/CIRCL/AIL-framework it means that you can stream output from Pystemon into AIL with ZMQ and let AIL do the indexing or the detection directly.

[adulau]

I just added a feeder from pystemon to AIL to ease the installation. As long as pystemon is configured with the Redis queue, it should work out of the box. https://github.com/CIRCL/AIL-framework/blob/master/bin/feeder/pystemon-feeder.py