Comment 8 for bug 1289064

Reviewed: https://review.openstack.org/142739
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=737fb8e7a7db775e937fe8b8a5f0ca148e1641be
Submitter: Jenkins
Branch: master

commit 737fb8e7a7db775e937fe8b8a5f0ca148e1641be
Author: jichenjc <email address hidden>
Date: Thu Dec 18 18:23:57 2014 +0800

    Enhance EvacuateHostTestCase test cases

    Currently even if the EvacuateHostTestCase test cases pass,
    there are some error log in the logs, it may lead to
    confusion when debug the problem, and more important,
    it will fail if the 'node' variable is used in the
    compute layer code since the 'node' is None and the
    cases will fail.
    Use stub by purpose because don't want to change current
    test structure.

    2014-12-18 18:20:23,694 ERROR [nova.compute.manager] Failed to get compute_info for fake-mini
    Traceback (most recent call last):
      File "/home/jichen/git/nova/nova/compute/manager.py", line 2797, in rebuild_instance
        compute_node = self._get_compute_info(context, self.host)
      File "/home/jichen/git/nova/nova/compute/manager.py", line 4859, in _get_compute_info
        service = objects.Service.get_by_compute_host(context, host)
      File "/home/jichen/git/nova/nova/objects/base.py", line 156, in wrapper
        result = fn(cls, context, *args, **kwargs)
      File "/home/jichen/git/nova/nova/objects/service.py", line 111, in get_by_compute_host
        db_service = db.service_get_by_compute_host(context, host)
      File "/home/jichen/git/nova/nova/db/api.py", line 131, in service_get_by_compute_host
        use_slave=use_slave)
      File "/home/jichen/git/nova/nova/db/sqlalchemy/api.py", line 127, in wrapper
        return f(*args, **kwargs)
      File "/home/jichen/git/nova/nova/db/sqlalchemy/api.py", line 431, in service_get_by_compute_host
        raise exception.ComputeHostNotFound(host=host)
    ComputeHostNotFound: Compute host fake-mini could not be found.

    Change-Id: I5541fc27afc23346ddcd685667737548b2a813c7
    Partial-Bug: #1289064