Jesse Pretorius b05dc73ca8 Clean up container cache prep in tests
This patch cleans up the container cache preparation in the tests
due to the following patches:

- https://review.openstack.org/307856 (new image build process)
- https://review.openstack.org/315114 (new apt config process)
- https://review.openstack.org/322188 (new resolver config process)

Change-Id: I62d58c45b600f979ac7548e8a355c3c05814c98a
2016-06-17 18:33:43 +01:00
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2016-03-18 11:01:17 -04:00