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/.gitignore b/.gitignore
new file mode 100644
index 0000000..dd2946a
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,64 @@
+*.py[cod]
+
+# C extensions
+*.so
+
+# Packages
+*.egg*
+*.egg-info
+dist
+build
+eggs
+parts
+bin
+var
+sdist
+develop-eggs
+.installed.cfg
+lib
+lib64
+
+# Installer logs
+pip-log.txt
+
+# Unit test / coverage reports
+cover/
+.coverage*
+!.coveragerc
+.tox
+nosetests.xml
+.testrepository
+.venv
+
+# Translations
+*.mo
+
+# Mr Developer
+.mr.developer.cfg
+.project
+.pydevproject
+
+# Complexity
+output/*.html
+output/*/index.html
+
+# Sphinx
+doc/build
+doc/source/_static/patrole.conf.sample
+
+# pbr generates these
+AUTHORS
+ChangeLog
+
+# Editors
+*~
+.*.swp
+.*sw?
+*.idea
+
+# Files created by releasenotes build
+releasenotes/build
+
+# Misc
+.stestr
+