Retry-After header param value should be a string

[Ivan Kolodyazhny]

Cinder doesn't work under Apache well with enabled debug. According to [1] in Python 2.x all header values should be a string.

Issue is reproducible on gates with gate-cinder-dsvm-apache job [2].

[1] https://github.com/python/cpython/blob/2.7/Lib/wsgiref/handlers.py#L180
[2] http://logs.openstack.org/85/216085/22/check/gate-cinder-dsvm-apache/ae2b8a3/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/230977

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/230977
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=045c26dd6c5868491622e470a5248a8389fc5f2b
Submitter: Jenkins
Branch: master

commit 045c26dd6c5868491622e470a5248a8389fc5f2b
Author: Ivan Kolodyazhny <email address hidden>
Date: Mon Oct 5 15:24:28 2015 +0300

    Convert Retry-After header parameter value to string

    Cinder doesn't work under Apache well with enabled debug.
    In Python 2.x all header values should be a string.

    Change-Id: Ie15b5f6836a60a6135ed2808380fa12c3281d5dd
    Closes-Bug: #1502881

[Thierry Carrez (ttx)]

This issue was fixed in the openstack/cinder 8.0.0.0b1 development milestone.