Exception in string format operation

[Davanum Srinivas (DIMS)]

"tox -e docs" shows the following error

2014-07-31 22:20:04.961 23265 ERROR nova.exception [req-ad8a37c6-85ae-4218-b8e6-d15eda5a1553 None] Exception in string format operation
2014-07-31 22:20:04.961 23265 TRACE nova.exception Traceback (most recent call last):
2014-07-31 22:20:04.961 23265 TRACE nova.exception File "/Users/dims/openstack/nova/nova/exception.py", line 118, in __init__
2014-07-31 22:20:04.961 23265 TRACE nova.exception message = self.msg_fmt % kwargs
2014-07-31 22:20:04.961 23265 TRACE nova.exception KeyError: u'flavor_id'
2014-07-31 22:20:04.961 23265 TRACE nova.exception
2014-07-31 22:20:04.962 23265 ERROR nova.exception [req-ad8a37c6-85ae-4218-b8e6-d15eda5a1553 None] reason:
2014-07-31 22:20:04.962 23265 ERROR nova.exception [req-ad8a37c6-85ae-4218-b8e6-d15eda5a1553 None] code: 404

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/111146
Committed: https://git.openstack.org/cgit/openstack/nova/commit/?id=6a9fe989e8d20ba43ed1a2bf318bc41b745f318e
Submitter: Jenkins
Branch: master

commit 6a9fe989e8d20ba43ed1a2bf318bc41b745f318e
Author: Davanum Srinivas <email address hidden>
Date: Thu Jul 31 22:55:50 2014 -0400

    docs - Fix exception in docs generation

    We need to pass the flavor_id when creating the side_effect
    using FlavorNotFound exception

    Change-Id: Id5d0ac387d2dca2dc70dabba173fc53972751236
    Closes-Bug: #1351127