Queens octavia template uses pike heat template version

[Oliver Walsh]

https://review.opendev.org/671324 adds the following param to docker/services/octavia/octavia-deployment-config.yaml:

  NovaEnableRbdBackend:
    default: false
    description: Whether to enable the Rbd backend for Nova ephemeral storage.
    type: boolean
    tags:
      - role_specific

However this fails in heat as parameter tags were added in queens and that template still has "heat_template_version: pike".

The yaml-validation tool currently warns but does not fail when templates use outdated heat_template_versions, so this slipped though CI.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/queens
Review: https://review.opendev.org/676685

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.opendev.org/676685
Committed: https://git.openstack.org/cgit/openstack/tripleo-heat-templates/commit/?id=a59a78aea8eef06d8075f5c4b2809d68842205b2
Submitter: Zuul
Branch: stable/queens

commit a59a78aea8eef06d8075f5c4b2809d68842205b2
Author: Oliver Walsh <email address hidden>
Date: Thu Aug 15 13:17:00 2019 +0100

    Update heat_template_version in templates, with stricter validation

    A number of templates are using older heat_template_version values.
    Update the templates and only accept queens in the validation tool.

    Change-Id: I2966e38449238d324122e97723795a7ad87f2611
    Resolves-bug: 1840246