Comment 3 for bug 1585102

Reviewed: https://review.openstack.org/320304
Committed: https://git.openstack.org/cgit/openstack/neutron/commit/?id=7f31ccb7bbe0f78a34d704c59d0562ea10029893
Submitter: Jenkins
Branch: master

commit 7f31ccb7bbe0f78a34d704c59d0562ea10029893
Author: Ihar Hrachyshka <email address hidden>
Date: Tue May 24 10:42:10 2016 +0200

    Adopt to config_dir option being a list and not a string

    Since oslo.config 3.8.0 (that included
    Ibd0566f11df62da031afb128c9687c5e8c7b27ae), config_dir option is a list,
    not a string. While our custom provider configuration parser for
    multistring options assumes the latter.

    It makes all installations that 1) pass at least one --config-dir option
    in CLI and 2) enable any service plugin that relies on provider
    definitions, to fail to start neutron-server. For example, this affects
    any RDO Mitaka installation with *aas service plugins enabled.

    Since Newton requires >=3.9.0, we are fine to switch to the list type
    without any code to support backwards compatibility with older option
    type. For Mitaka backport, we will need to handle both cases.

    Change-Id: I10e399a852d9fba0fd1aea79a10e2e7c906e4b3c
    Closes-Bug: #1585102