Add revoke-sudo role and update tox jobs

Change-Id: Ie0df08b6c4e4442e6d769b6ca26e59f919889566
Signed-off-by: Paul Belanger <pabelanger@redhat.com>
diff --git a/playbooks/tox-linters.yaml b/playbooks/tox-linters.yaml
index 9da2e8a..d1e7f13 100644
--- a/playbooks/tox-linters.yaml
+++ b/playbooks/tox-linters.yaml
@@ -2,4 +2,5 @@
   vars:
     run_tox_envlist: pep8
   roles:
+    - revoke-sudo
     - run-tox