This patch will fix dsvm failure:
1. The new changes in devstack [1]. Whereby, plugin was not enabled
to use multiple times. Currently, almost functions like fixup_quota,
add_key and add_secgrp enable plugin which runs multiple times.
2. Some functional tests were not working with event/auditing function.
[1]https://review.openstack.org/#/c/396794/
Change-Id: I1846c0df1d59557919a4caa612f2a4c60fbf7ce8
Closes-Bug: #1646807