oslo.config generator does not handle default string values for List type correctly

[Ihar Hrachyshka]

When using the generator, if List option is passed a string as default value, it is parsed correctly by the library itself (doing .split(',')) but the generator does not follow the path and does ','.join(opt.default) which results in eg.:

#
# From neutron.qos
#

# Drivers list to use to send the update notification (list value)
#notification_drivers = m,e,s,s,a,g,e,_,q,u,e,u,e

for the following option:

QOS_PLUGIN_OPTS = [
    cfg.ListOpt('notification_drivers',
                default='message_queue',
                help=_('Drivers list to use to send the update notification')),
]

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/322129

[OpenStack Infra (hudson-openstack)]

Change abandoned by Ihar Hrachyshka (<email address hidden>) on branch: stable/mitaka
Review: https://review.openstack.org/322129
Reason: Meh. Wrong branch.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/322149

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/322149
Committed: https://git.openstack.org/cgit/openstack/oslo.config/commit/?id=75e1c306630378673861d52a34de51e869183062
Submitter: Jenkins
Branch: master

commit 75e1c306630378673861d52a34de51e869183062
Author: Ihar Hrachyshka <email address hidden>
Date: Fri May 27 14:12:37 2016 +0200

    generator: format string default value for List type properly

    List type allows to pass string values as default values, which are then
    handled by splitting on commas. For formatting matters, if the default
    value is of string type, there is no special conversion needed, and we
    can reuse the value as-is.

    Change-Id: Ie9ecdfc064e886f6138b1fa9e839d8f95a7df339
    Closes-Bug: #1586366

[Davanum Srinivas (DIMS) (dims-v)]

This issue was fixed in the openstack/oslo.config 3.11.0 release.

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/322129
Committed: https://git.openstack.org/cgit/openstack/oslo.config/commit/?id=9dd6ac634842b037c99d25b34431eaa2f4ed427c
Submitter: Jenkins
Branch: stable/mitaka

commit 9dd6ac634842b037c99d25b34431eaa2f4ed427c
Author: Ihar Hrachyshka <email address hidden>
Date: Fri May 27 14:12:37 2016 +0200

    generator: format string default value for List type properly

    List type allows to pass string values as default values, which are then
    handled by splitting on commas. For formatting matters, if the default
    value is of string type, there is no special conversion needed, and we
    can reuse the value as-is.

    Change-Id: Ie9ecdfc064e886f6138b1fa9e839d8f95a7df339
    Closes-Bug: #1586366
    (cherry picked from commit 75e1c306630378673861d52a34de51e869183062)