Add non-voting job to check all candidates

I suggest we leave this as non-voting for this PTL election manually
verify the results.  Once we're confident we can upgrade it to voting.

Change-Id: I01ad9c76ab68e8282acb4bcc66a2eb7c57596171

.zuul.d/jobs.yaml

@@ -0,0 +1,11 @@
+- job:
+    name: election-tox-ci-checks
+    parent: openstack-tox
+    description: |
+      Run the ci-checks tox environment
+
+      This environment runs the easy, for a machine, to validate election
+      checks.
+    vars:
+      tox_envlist: ci-checks
+

.zuul.d/project.yaml

@@ -0,0 +1,5 @@
+- project:
+    check:
+      jobs:
+        - election-tox-ci-checks:
+            voting: false

tox.ini

@@ -32,5 +32,8 @@ commands = {posargs}
 [testenv:docs]
 commands = python setup.py build_sphinx
 
+[testenv:ci-checks]
+commands = ci-check-all-candidate-files
+
 [flake8]
 exclude=.tox,doc/source/conf.py