This update for python-bugzilla fixes the following issues:

- Update to 3.2.0:

  * Use soon-to-be-required Authorization header for RH bugzilla
  * Remove cookie auth support
  * Detect bugzilla.stage.redhat.com as RHBugzilla
  * Add limit as option to build_query

- Disable python2 building, as the support was dropped with 3.0.0

- Update to 3.0.2:

  - Fix API key leaking into requests exceptions
  - Skip man page generation to fix build on Windows (Alexander Todorov)
  - Drop python2 support
  - New option bugzilla modify --minor-update option
  - requests: use PYTHONBUGZILLA_REQUESTS_TIMEOUT env variable
  - xmlrpc: Don't add api key to passed in user dictionary
  - cli: Add query --extrafield, --includefield, --excludefield
  - Revive bugzilla.rhbugzilla.RHBugzilla import path
  - Bugzilla REST API support
  - Add --json command line output option
  - Add APIs for Bugzilla Groups (Pierre-Yves Chibon)
  - Add Bugzilla.get_requests_session() API to access raw requests
    Session
  - Add Bugzilla.get_xmlrpc_proxy() API to access raw ServerProxy
  - Add Bugzilla requests_session= init parameter to pass in auth, etc.
  - Add bugzilla attach --ignore-obsolete (Čestmír Kalina)
  - Add bugzilla login --api-key for API key prompting (Danilo C. L. de
    Paula)
  - Add bugzilla new --private