tempest merge_configs add config path

[zhubingbing]

tempest merge_configs add config path

- name: Copying over tempest.conf
  merge_configs:
    vars:
      project_name: "tempest"
    sources:
      - "{{ role_path }}/templates/tempest.conf.j2"
      - "{{ node_custom_config }}/tempest.conf"
    dest: "{{ node_config_directory }}/{{ item.key }}/tempest.conf"

can't merge /etc/kolla/globa.yml

so we setting tempest in /etc/kolla/globa.yml don;t working.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/481808

[OpenStack Infra (hudson-openstack)]

Change abandoned by zhubingbing ([e-mail]) on branch: master
Review: https://review.openstack.org/481808

[Tom Fifield (fifieldt)]

Comment from the patch - "database and messaging are announced as deprecated.
So i think we should not add this now. "