Fix multi-policy related issues.
The "rule" and "expected_error_code" parameters of the rbac_rule_validation
decorator have been removed after a deprecation period, and this means
that any test that uses "rule" or "expected_error_code" parameters
will need to be changed to use "rules" and "expected_error_codes".
This is as par Patrole commit
https://review.openstack.org/#/c/595450/
Also, fixed tox pep8 issue as well as with a new .gitignore file.
diff --git a/requirements.txt b/requirements.txt
index 84d7047..f45ae7a 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -2,6 +2,4 @@
# of appearance. Changing the order has an impact on the overall integration
# process, which may cause wedges in the gate later.
-Patrole>=0.2.0
-pylint
-
+Patrole