'Enable glance artifact repository' incompatible default value and restrictions

[Arthur Svechnikov]

Detailed bug description:
'Enable glance artifact repository' is enabled by default, however, there are requirement in murano enablement and murano disabled by defaul. This leads to the situation like on screenshot

https://github.com/openstack/fuel-web/blob/9c7f21b4518884b834ee3db3e8370be78e479cbc/nailgun/nailgun/fixtures/openstack.yaml#L948-L956

Steps to reproduce:
Navigate to cluster settings tab and select Openstack Services

Expected result:
'Enable glance artifact repository' enabled and its configuration is also enabled

Actual result:
'Enable glance artifact repository' enabled and its configuration is disabled

Reproducibility:
always

Workaround:
FIx release attributes in db

Description of the environment:
Fuel 10.0 ISO 96+

Impact:
Blocker for https://bugs.launchpad.net/fuel/+bug/1567394

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/305346

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/305346
Committed: https://git.openstack.org/cgit/openstack/fuel-web/commit/?id=11f55603d7b1b03fcc4aa178ad3b0376841b05f5
Submitter: Jenkins
Branch: master

commit 11f55603d7b1b03fcc4aa178ad3b0376841b05f5
Author: Artur Svechnikov <email address hidden>
Date: Wed Apr 13 18:05:20 2016 +0300

    Change Murano Glance Artifact Plugin location

    Since this plugin is used only by Murano and this
    plugin should be enabled by default, it's moved to
    Murano settings section, which is hidden in case of
    Murano is disabled.

    Change-Id: I8ebac4405a1eaede18a35acbbab7b202b6aac754
    Closes-Bug: #1569944