Finished release v0.6.20.

* release/v0.6.20:
  HOSTDEV-1559 bootstrap update: tell ez_setup to download setuptools using urlopen and not with the external command-line utilities
  fixing test
  fixing previous test
  setuptools-2.2 does not have zip file on pypi, 3.0.1 which does
  fixing test
  fetching ez_setup.py from python.infinidat.com as bitbucket now has rate limiting which sucks behind nat
  removing console_scritps from the skeleton buildout.cfg
adding zc.buildout to development scripts
fixing tests