Delete running tempest with all plugins
Delete running tempest with all plugins

In previous patch set [1]. It already
fixed a bug relate to grenade [2]. However
there is a bug related to barbican-tempest-plugin.

This patch set will delete the option to
run tempest with plugins.
[1] https://review.openstack.org/#/c/453013/
[2]
http://logs.openstack.org/79/452679/4/experimental/gate-grenade-dsvm-barbican-ubuntu-xenial-nv/96eecf7/logs/grenade.sh.txt.gz

Change-Id: Iac4e4c12913c6f4b26d595f2f62c3f62601a8d84

openstack-infra/project-config,openstack-infra/project-config