Ivan Kolodyazhny d870b40583 Remove six usage from openstack_dashboard package
We don't support Python 2 anymore so we don't need this
compatibility library.

six.reraise usages are left as is until it'll be moved to some
base lib like oslo.utils to not re-implenent this method in
Horizon.

This patch also removes Python2-specific base test case methods
assertItemsEqual and assertNotRegexpMatches in flavor of new
Python 3 analogues.

Change-Id: I26a59176be9e9f213128e4945a58b9459334b626
2020-01-15 12:47:48 +02:00
..
2015-05-13 12:39:00 -06:00
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