Remove node_role usage in fuel-library noop rspec tests

[Aleksandr Didenko]

Introduced by https://review.openstack.org/255996 where 'node_role' was removed from Hiera. But we still have a bunch of rspec tests that rely on 'node_role' hiera key and thus they do not work at the moment. For example:

enable = (Noop.hiera_structure('murano/enabled') and Noop.hiera('node_role') == 'primary-controller')

from murano_rspec.rb test currently return 'false' even for primary controllers, so we no longer run tests for primary controller role.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/262252

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/262252
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=c26c4c5e8ce4966e3cc2de4ef16a6ad9f8ba20c1
Submitter: Jenkins
Branch: master

commit c26c4c5e8ce4966e3cc2de4ef16a6ad9f8ba20c1
Author: Aleksandr Didenko <email address hidden>
Date: Tue Dec 29 16:50:43 2015 +0100

    Remove 'node_role' Hiera key from noop tests

    Since I8b51651adc2634544f510de8838ebaabcd1e7d43 we no longer have
    'node_role' key in Hiera. So we should fix all rspec tests that
    are using this key.

    Change-Id: I1e22e9c94f834563df5b6d7192b690aed7db6dd6
    Closes-bug: #1529888

[Mikhail Samoylov (msamoylov)]

Verified.

1. Download fuel-library code or open https://git.openstack.org/cgit/openstack/fuel-library/tree/tests/noop/spec/hosts
2. Check that code really changed.