tempest: follow the move of some tempest modules

[Thomas Morin]

Currently, this exception is raise when we run the tempest plugin:

/opt/stack/networking-bgpvpn/networking_bgpvpn_tempest/tests/base.py:50: DeprecationWarning: Read-only property 'os' has moved to 'os_primary' in version 'Pike' and will be removed in version 'Queens'
  cls.os.auth_provider,
/opt/stack/networking-bgpvpn/networking_bgpvpn_tempest/tests/base.py:58: DeprecationWarning: Read-only property 'os_adm' has moved to 'os_admin' in version 'Pike' and will be removed in version 'Queens'
  cls.os_adm.auth_provider,
/opt/stack/networking-bgpvpn/networking_bgpvpn_tempest/tests/base.py:66: DeprecationWarning: Read-only property 'alt_manager' has moved to 'os_alt' in version 'Pike' and will be removed in version 'Queens'
  cls.alt_manager.auth_provider,

[Thomas Morin (tmmorin-orange)]

see https://review.openstack.org/#/c/509346/

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/511125

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/511125
Committed: https://git.openstack.org/cgit/openstack/networking-bgpvpn/commit/?id=dd65d1ade2c4c8e6c18a4246ca71c19be0714234
Submitter: Zuul
Branch: master

commit dd65d1ade2c4c8e6c18a4246ca71c19be0714234
Author: Vu Cong Tuan <email address hidden>
Date: Wed Oct 11 11:03:28 2017 +0700

    Replace the usage of some aliases in tempest

    After [1] was merged, I found out there are still 2 places
    in which the aliases haven't been replaced yet.
    Therefore, I did some final checks again to make sure
    all the aliases have been covered.

    This patch set replaces the remaining aliases in these 2 places.
    Closes-Bug: 1720000

    [1] https://review.openstack.org/#/c/509346/

    Change-Id: I5825be644609ca0107f6c32f5fc1406517a2e2fe

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/networking-bgpvpn 8.0.0.0b1 development milestone.