RequestContext initialization failed in nova

[huangtianhua]

RequestContext initialization failed in nova because of the following error:
                   "TypeError: 'in <string>' requires string as left operand, not NoneType"

My operations as follows:

1.Call keystone api to create a service without type.
2.Call keystone api to add a endpoint with the service.
3.Call nova api to list servers.

Then the error TypeError: 'in <string>' requires string as left operand, not NoneType" has been thrown.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/55355

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/55355
Committed: http://github.com/openstack/nova/commit/94c1ad5c0eb0fd574f659a9477b222a7d6c84c4b
Submitter: Jenkins
Branch: master

commit 94c1ad5c0eb0fd574f659a9477b222a7d6c84c4b
Author: huangtianhua <email address hidden>
Date: Wed Nov 6 15:26:35 2013 +0800

    Fixes RequestContext initialization failure.

    RequestContext initialization failed in nova because of the following
    error:
    "TypeError: 'in <string>' requires string as left operand, not NoneType"

    It must traverses in tuple not in string when find the "volume" service_catalog.

    Change-Id: Ie0de50fcafbeabf4698696add610d4e6804f45eb
    Closes-Bug: #1248424