fuel-agent: uses wrong oslo.config module name

[Vasyl Saienko]

In liberty 2.4.0 oslo.config is packaged https://review.fuel-infra.org/gitweb?p=openstack%2Foslo.config.git;a=shortlog;h=refs%2Fheads%2Fopenstack-ci%2Ffuel-8.0%2Fliberty

which doesn't contain module oslo.config with "."

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/233534

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/233534
Committed: https://git.openstack.org/cgit/stackforge/fuel-agent/commit/?id=4d1aca6b32f4cae22ae111487b8b2128cebc00f8
Submitter: Jenkins
Branch: master

commit 4d1aca6b32f4cae22ae111487b8b2128cebc00f8
Author: vsaienko <email address hidden>
Date: Mon Oct 12 12:11:58 2015 +0300

    use oslo_config namespace

     * In liberty oslo.config 2.4.0 is packaged which doesn't
       contain oslo.config namespace

    Change-Id: Ia4a1972d81fb0a2b21ee7f94353946aef9351605
    Closes-Bug: #1505138

[Sebastian Kalinowski (prmtl)]

Version of oslo.config was set completly without sync of any of global-requirements and will cause version conflicts. This bug is not correctly fixed.

[Vasyl Saienko (vsaienko)]

Sebastian, we update version of oslo.config to 1.6.0 in requirements.txt which is the actual oslo.config version, that is build for centos6. Package oslo.config has its own requirements https://github.com/openstack/oslo.config/blob/1.6.0/requirements.txt#L4 why we should duplicate them in fuel-agent?
Furthermore ISO with patch https://review.openstack.org/#/c/233534/ passed bvt tests so there is no version conflict.