[stable/1.0] Add zuul CI

Change-Id: I6dba518b88d7e287cdbaeced97c979427fdca981
diff --git a/.flake8 b/.flake8
new file mode 100644
index 0000000..fa37d02
--- /dev/null
+++ b/.flake8
@@ -0,0 +1,3 @@
+[flake8]
+max-line-length = 120
+exclude = .venv,.git,.tox,dist,doc,*lib/python*,*egg,build