[slapos.cli.configure_local] Use the new API to start slapos proxy because slapproxy command does not exist anymore

  Remove older registers, already reported (or exported to csv)
  (older them 3 days)

  This commit mark the release preparation.

  Initiall tests for Snapshot and Entity

Major changes
  Rename pymonitor, add dependency and simplify
  Save all information using sqllite
  Record information from all processes individually
  Implement Snapshot for Computer and Systems information
  General Clean up

because it would go nowhere. just use stderr as usual

This reverts commit 280232a7.

Else it always return 0: http://git.openstack.org/cgit/openstack/cliff/tree/cliff/command.py?id=1.4#n39