Stop spamming ansible/ansible

Having the system-required template in place means we're running
merge-check on all ansible patches - and reporting back the results.

We need to stop that.

Change-Id: I75f6086174eb8f64d82185a153a55641425c9632

tools/zuul-projects-checks.py

@@ -31,6 +31,10 @@ def check_system_templates():
     print("=====================================")
     for entry in projects:
         project = entry['project']
+        # TODO(mordred) Generalize this, but for now, avoid doing this check
+        # on ansible.
+        if project['name'] == 'ansible/ansible':
+            continue
         try:
             correct = False
             for template in project['templates']:
@@ -94,7 +98,7 @@ def check_release_jobs():
     for entry in projects:
         project = entry['project']
         name = project['name']
-        found = [tmpl for tmpl in project['templates']
+        found = [tmpl for tmpl in project.get('templates', [])
                  if tmpl in release_templates]
         if len(found) > 1:
             errors = True

zuul.d/projects.yaml

@@ -3,8 +3,8 @@
 
 - project:
     name: ansible/ansible
-    templates:
-      - system-required
+    # ansible/ansible does not include system-required on purpose. We do not
+    # gate ansible/ansible and we should NOT be doing merge-check on it.
     check:
       jobs:
         - shade-ansible-devel-functional-devstack: