Cover up with test-cases config db improvements

[Alexandr Kostrikov]

There is a ongoing work on configdb and it should be covered by automated test cases.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/359165

[Alexandr Kostrikov (akostrikov-mirantis)]

There is a need to cover `path` actions

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/359165
Committed: https://git.openstack.org/cgit/openstack/fuel-qa/commit/?id=20fa6bfa5ca873327b5cf9c132d692cd0014a19d
Submitter: Jenkins
Branch: master

commit 20fa6bfa5ca873327b5cf9c132d692cd0014a19d
Author: Alexandr Kostrikov <email address hidden>
Date: Tue Aug 23 15:22:15 2016 +0300

    Implement configdb cli coverage

    There are new handlers in fuel cli which are
    intented to utilize CRUD operations of
    ConfigDB.
    Work with values(levels and overrides) is verified

    Change-Id: I531733b296765b0d472644fbe3739e03c0475fca
    Closes-bug: #1616047

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/mitaka
Review: https://review.openstack.org/369315