Updating dist_utils.py

When you update dist_utils.py, you will also need to update it in other repositories.

The complete list is:

• st2 - updating dist_utils.py and running make requirements will update all of these automatically:
  • st2actions
  • st2api
  • st2auth
  • st2client
  • st2comon
  • st2debug
  • st2exporter
  • st2reactor
  • st2stream
  • st2tests
  • contrib/runners/action_chain_runner
  • contrib/runners/announcement_runner
  • contrib/runners/http_runner
  • contrib/runners/inquirer_runner
  • contrib/runners/local_runner
  • contrib/runners/mistral_v2 - by the time you read this, this runner should be removed
  • contrib/runners/noop_runner
  • contrib/runners/orquesta_runner
  • contrib/runners/python_runner
  • contrib/runners/remote_runner
  • contrib/runners/winrm_runner
• st2-packages
• st2-auth-backend-flat-file
• st2-enterprise-auth-backend-ldap
• orquestaconvert