Comment 2 for bug 1531128

Reviewed: https://review.openstack.org/263876
Committed: https://git.openstack.org/cgit/openstack/fuel-library/commit/?id=d89b25921c2cd982dca92a55a46b98ed50a060a2
Submitter: Jenkins
Branch: master

commit d89b25921c2cd982dca92a55a46b98ed50a060a2
Author: Sergey Vasilenko <email address hidden>
Date: Tue Jan 5 17:56:18 2016 +0300

    No more use nodes list.

    Nodes list is deprecated, beause incompatible with network-roles model.
    Network metadata should be used instead.

    This patchset implements:
    * remove nodes list from fixtures
    * remove unused function filter_nodes
    * remove some unused code, related to nodes list
    * new parser function get_node_key_name() for generating immutable node key name
    * fix parser function roles_include() for using network_metadata
    * use roles_include() if need instead directly lookup into network_metadata
    * fix some manifests for use network_matadata/nodes

    Change-Id: I2e6b1cd5cb75263efc995aa9f62bd3073abed1b8
    Related-bug: #1531128
    Related-bug: #1538220