Hide all passwords from upgrade logs

[Sebastian Kalinowski]

Upgrade scripts logs all configuration data into the log file like:

2014-08-12 09:33:03 DEBUG 20499 (cli) Configuration data: {'cobbler_container_config_path':
....
'keystone_credentials': {'username': 'admin', 'tenant_name': 'admin', 'password': 'admin', 'auth_url': 'http://10.108.0.2:5000/v2.0/tokens'}
....

Configuration contains password to various services/modules. All sensitive data must be removed/hidden from the configuration dump.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/133314

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/135340

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/135340
Committed: https://git.openstack.org/cgit/stackforge/fuel-web/commit/?id=109abbbdaf8ca11b39305699330599c3fd14badf
Submitter: Jenkins
Branch: master

commit 109abbbdaf8ca11b39305699330599c3fd14badf
Author: Ivan Kliuk <email address hidden>
Date: Tue Nov 18 18:17:12 2014 +0200

    Remove passwords reflection from logging messages

      Implement custom Logger class for sanitizing dict(), list() and
      fuel_upgrade.config.Config() instances.
      Add sanitizer() function which substitutes config data with mask
      based on keywords.
      Refactor all logger calls to use the sanitizer.

    Closes-Bug: 1387164
    Change-Id: I810610aed59f7a6a904b1bcfe4d89b674aba96fc

[OpenStack Infra (hudson-openstack)]

Change abandoned by Ivan Kliuk (<email address hidden>) on branch: master
Review: https://review.openstack.org/133314
Reason: The functionality has been implemented here: https://review.openstack.org/#/c/135340/