Remove usage of six library

Registered by Hongtao Qi

The Python 2.7 Support has been dropped since Ussuri (*1).
Then replace usage of six (a Python 2 and 3 compatibility library) with code for Python 3.

Blueprint information

Status:
Complete
Approver:
eyal
Priority:
Undefined
Drafter:
Hongtao Qi
Direction:
Needs approval
Assignee:
Hongtao Qi
Definition:
Approved
Series goal:
None
Implementation:
Implemented
Milestone target:
None
Started by
Hongtao Qi
Completed by
Eyal B

Related branches

Sprints

Whiteboard

https://review.opendev.org/#/q/status:merged+project:openstack/vitrage+branch:master+topic:remove-six

Addressed by: https://review.opendev.org/752626
   Remove six.text_type/b/u

Addressed by: https://review.opendev.org/752623
   Remove CPickle

Addressed by: https://review.opendev.org/752726
   Remove six.add_metaclass

Addressed by: https://review.opendev.org/752601
   Remove six.moves

(?)

Work Items

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