Can not import magnum.api.validation

[Hua Wang]

We can not import magnum.api.validation because of circle reference.

We can reproduce this bug by "tox -egenconfig" or import magnum.api.validation in a python console.

Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
  File "magnum/api/validation.py", line 20, in <module>
    from magnum.api.controllers.v1 import utils as api_utils
  File "magnum/api/controllers/v1/__init__.py", line 30, in <module>
    from magnum.api.controllers.v1 import baymodel
  File "magnum/api/controllers/v1/baymodel.py", line 29, in <module>
    from magnum.api import validation
ImportError: cannot import name validation

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/252177

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/252177
Committed: https://git.openstack.org/cgit/openstack/magnum/commit/?id=a09ff4bc258e97db208285ff9ab54d72abb2f621
Submitter: Jenkins
Branch: master

commit a09ff4bc258e97db208285ff9ab54d72abb2f621
Author: Hua Wang <email address hidden>
Date: Wed Dec 2 12:16:53 2015 +0800

    Remove circle reference

    We can not import magnum.api.validation because of circle reference.

    We can reproduce this bug by "tox -egenconfig" or importing
    magnum.api.validation in a python console.

    Traceback (most recent call last):
      File "<stdin>", line 1, in <module>
      File "magnum/api/validation.py", line 20, in <module>
        from magnum.api.controllers.v1 import utils as api_utils
      File "magnum/api/controllers/v1/__init__.py", line 30, in <module>
        from magnum.api.controllers.v1 import baymodel
      File "magnum/api/controllers/v1/baymodel.py", line 29, in <module>
        from magnum.api import validation
    ImportError: cannot import name validation

    Change-Id: Ib73d7f1d989b9bc860bfadafa52e9a83996f5de9
    Closes-Bug: #1521840

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/magnum 2.0.0 release.