Updated openstack/openstack
Project: openstack/nova  adaa95eef5881a6fb34ca6a0a512adb57bad8395

Remove unnecessary imageRef setting from tests

In setUp(), a default imageRef is set already and it is not necessary
to set it in each test if that is not the purpose of the tests.
This patch removes such unnecessary imageRef setting for cleanup.

Change-Id: I2dcf79112d1e6adfbb634bf4c957bbb1238232d8