Add gate config

This patch adds gerrit configuration as well as an
ansible-lint gate job.

Change-Id: I13b5a6505195591f7d6471ebe151cc8ed03eae75

.gitreview

@@ -0,0 +1,4 @@
+[gerrit]
+host=review.openstack.org
+port=29418
+project=openstack/ansible-role-atos-hsm.git

tasks/main.yaml

@@ -66,5 +66,5 @@
       dest: /etc/proteccio/server_cert.crt
       force: no
 
-- name: run nethsmstatus to confirm connection
+- name: run nethsmstatus to confirm connection  # noqa 301
   command: nethsmstatus

test-requirements.txt

@@ -0,0 +1 @@
+ansible-lint

tox.ini

@@ -0,0 +1,10 @@
+[tox]
+minversion = 2.0
+envlist = linters
+skipdist = true
+
+[testenv]
+deps = -r{toxinidir}/test-requirements.txt
+
+[testenv:linters]
+commands = ansible-lint {toxinidir}

zuul.d/layout.yaml

@@ -0,0 +1,11 @@
+---
+- project:
+    check:
+      jobs:
+        - openstack-tox-linters
+    gate:
+      jobs:
+        - openstack-tox-linters
+    post:
+      jobs:
+        - publish-openstack-python-branch-tarball