Updated openstack/openstack
Project: openstack/tempest  595d736542df61d8658387c4c96d05668b642d0b

Support lack of ephemeral volumes for baremetal

The agent driver in Ironic does not yet support ephemeral volumes.
This change allows tempest to test Ironic with the agent driver
by skipping ephemeral volume checks if the ephemeral volume size
is 0.

Change-Id: I9525d1c75007555d368a2aa66ab840f41b584a30