Use new combined neutron_tempest_plugin as nftables jobs parent
Use new combined neutron_tempest_plugin as nftables jobs parent

Patch [1] removed neutron-tempest-plugin-api job and combined it with
the "-scenario" jobs. It also changed names of those jobs by dropping
"scenario" word from it.
This patch updates accordingly nftables based jobs which are defined in
the neutron repo.

[1] https://review.opendev.org/c/openstack/neutron-tempest-plugin/+/836912

Change-Id: Ibad1ee5d0f61d112bae435b6e0cf4d815d705f4e

openstack/neutron,mahak/neutron,mahak/neutron,openstack/neutron,openstack/neutron,mahak/neutron