Rename test class
Rename test class

Now that we've moved the tear-down-related tests to the
DoNodeTearDownTestCase, we can rename the class that only
does deploy-related tests.

This is a followup to I6d1cf4e4e8bb4e394cb30356af1f16875fbd8a47.

Change-Id: I37850a7fd9ced7e02d8d0d7a92d730f5345ae2d0

openstack/ironic,openstack/ironic