Changed docker_restart_policy to unless-stopped

Current implementation has docker_restart_policy "always" and
docker_restart_policy_retry:"10" which should be mutually exclusive.
"unless-stopped" will restart the containers on any exit state
but not start on daemon startup if container was put to stopped state before.
Closes-Bug: #1621187

Change-Id: I4d881cd123a55625121b7a9047385e9b54e2e129

ansible/group_vars/all.yml

@@ -72,8 +72,8 @@ docker_registry:
 docker_namespace: "kolla"
 docker_registry_username:
 
-# Valid options are [ never, on-failure, always ]
-docker_restart_policy: "always"
+# Valid options are [ never, on-failure, always, unless-stopped ]
+docker_restart_policy: "unless-stopped"
 
 # '0' means unlimited retries
 docker_restart_policy_retry: "10"

ansible/library/kolla_docker.py

@@ -145,6 +145,7 @@ options:
       - never
       - on-failure
       - always
+      - unless-stopped
   restart_retries:
     description:
       - How many times to attempt a restart if restart_policy is set
@@ -511,7 +512,9 @@ class DockerWorker(object):
             'volumes_from': self.params.get('volumes_from')
         }
 
-        if self.params.get('restart_policy') in ['on-failure', 'always']:
+        if self.params.get('restart_policy') in ['on-failure',
+                                                 'always',
+                                                 'unless-stopped']:
             options['restart_policy'] = {
                 'Name': self.params.get('restart_policy'),
                 'MaximumRetryCount': self.params.get('restart_retries')
@@ -674,10 +677,12 @@ def generate_module():
         pid_mode=dict(required=False, type='str', choices=['host']),
         privileged=dict(required=False, type='bool', default=False),
         remove_on_exit=dict(required=False, type='bool', default=True),
-        restart_policy=dict(required=False, type='str', choices=['no',
+        restart_policy=dict(required=False, type='str', choices=[
+                            'no',
                             'never',
                             'on-failure',
-                                                                 'always']),
+                            'always',
+                            'unless-stopped']),
         restart_retries=dict(required=False, type='int', default=10),
         tls_verify=dict(required=False, type='bool', default=False),
         tls_cert=dict(required=False, type='str'),

tests/test_kolla_docker.py

@@ -73,7 +73,8 @@ class ModuleArgsTest(base.BaseTestCase):
                 required=False, type='str', choices=['no',
                                                      'never',
                                                      'on-failure',
-                                                     'always']),
+                                                     'always',
+                                                     'unless-stopped']),
             restart_retries=dict(required=False, type='int', default=10),
             tls_verify=dict(required=False, type='bool', default=False),
             tls_cert=dict(required=False, type='str'),
@@ -107,7 +108,7 @@ FAKE_DATA = {
             'pid_mode': '',
             'privileged': False,
             'volumes_from': None,
-            'restart_policy': 'always',
+            'restart_policy': 'unless-stopped',
             'restart_retries': 10},
         'labels': {'build-date': '2016-06-02',
                    'kolla_version': '2.0.1',