blueprint for 3.0.0 policy-handler

- migrated from python 2.7 to 3.6
- brought up the latest versions of dependencies
  -- Cherrypy 15.0.0, requests 2.18.4, websocket-client 0.48.0

Change-Id: I93cfdac202df88a93f511a34329b6e5b75cd45e3
Signed-off-by: Alex Shatov <alexs@att.com>
Issue-ID: DCAEGEN2-515
2 files changed