Switch ansible_default to 2.8

As this is the lastest stable version of ansible.

Change-Id: I02a0e9703a61b3976cec559a1069b51616c3d447
Signed-off-by: Paul Belanger <pabelanger@redhat.com>

doc/source/admin/examples/docker-compose.yaml

@@ -27,7 +27,9 @@ services:
       - "sshkey:/var/ssh:z"
       - "nodessh:/var/node:z"
       - "./playbooks/:/var/playbooks/:z"
-    command: "/usr/local/lib/zuul/ansible/2.5/bin/ansible-playbook /var/playbooks/setup.yaml"
+    # NOTE(pabelanger): Be sure to update this line each time we change the
+    # default version of ansible for Zuul.
+    command: "/usr/local/lib/zuul/ansible/2.8/bin/ansible-playbook /var/playbooks/setup.yaml"
   zk:
     image: zookeeper
   mysql:

releasenotes/notes/ansible-2.8-default-version-43754b72b3dd2897.yaml

@@ -0,0 +1,8 @@
+---
+upgrade:
+  - |
+    The default version of Ansible used by Zuul jobs has been changed to 2.8.
+    See :attr:`job.ansible-version` for more information.
+  - |
+    Ansible 2.6 for Zuul jobs has been marked deprecated and will be removed in
+    a future release.

tests/fixtures/config/ansible-versions/git/common-config/zuul.yaml

@@ -25,7 +25,7 @@
     parent: ansible-version
     vars:
       test_ansible_version_major: 2
-      test_ansible_version_minor: 7
+      test_ansible_version_minor: 8
 
 # This job is used by a test case specifying a different ansible version in
 # zuul.conf

tests/unit/test_inventory.py

@@ -141,7 +141,7 @@ class TestInventory(TestInventoryBase):
             self.assertIn(node_name, inventory['all']['hosts'])
             node_vars = inventory['all']['hosts'][node_name]
             self.assertEqual(
-                '/usr/bin/python2', node_vars['ansible_python_interpreter'])
+                'auto', node_vars['ansible_python_interpreter'])
         self.assertIn('zuul', inventory['all']['vars'])
         self.assertIn('attempts', inventory['all']['vars']['zuul'])
         self.assertEqual(1, inventory['all']['vars']['zuul']['attempts'])

tests/unit/test_v3.py

@@ -4939,15 +4939,15 @@ class TestJobOutput(AnsibleZuulTestCase):
         j = json.loads(self._get_file(self.history[0],
                                       'work/logs/job-output.json'))
         self.assertEqual(token,
-                         j[0]['plays'][0]['tasks'][0]
+                         j[0]['plays'][0]['tasks'][1]
                          ['hosts']['test_node']['stdout'])
-        self.assertTrue(j[0]['plays'][0]['tasks'][1]
-                        ['hosts']['test_node']['skipped'])
         self.assertTrue(j[0]['plays'][0]['tasks'][2]
+                        ['hosts']['test_node']['skipped'])
+        self.assertTrue(j[0]['plays'][0]['tasks'][3]
                         ['hosts']['test_node']['failed'])
         self.assertEqual(
             "This is a handler",
-            j[0]['plays'][0]['tasks'][3]
+            j[0]['plays'][0]['tasks'][4]
             ['hosts']['test_node']['stdout'])
 
         self.log.info(self._get_file(self.history[0],
@@ -4997,7 +4997,7 @@ class TestJobOutput(AnsibleZuulTestCase):
         j = json.loads(self._get_file(self.history[0],
                                       'work/logs/job-output.json'))
         self.assertEqual(token,
-                         j[0]['plays'][0]['tasks'][0]
+                         j[0]['plays'][0]['tasks'][1]
                          ['hosts']['test_node']['stdout'])
 
         self.log.info(self._get_file(self.history[0],

zuul/lib/ansible-config.conf

@@ -1,6 +1,6 @@
 # This file describes the currently supported ansible versions
 [common]
-default_version = 2.7
+default_version = 2.8
 requirements = ara>=0.16.5,<1.0.0 openstacksdk openshift jmespath
 
 [2.5]
@@ -8,6 +8,7 @@ deprecated = true
 requirements = ansible>=2.5.1,<2.6
 
 [2.6]
+deprecated = true
 requirements = ansible>=2.6,<2.7
 
 [2.7]