Ansible Docker patch to allow for authenticated pull

docker_patch

diff --git a/library/cloud/docker b/library/cloud/docker
index 79c6145..c77bb46 100644
--- a/library/cloud/docker
+++ b/library/cloud/docker
@@ -557,7 +557,7 @@ class DockerManager:
                   'detach':       self.module.params.get('detach'),
                   'name':         self.module.params.get('name'),
                   'stdin_open':   self.module.params.get('stdin_open'),
-                  'tty':          self.module.params.get('tty'),
+                  'tty':          self.module.params.get('tty')
                   }

         if docker.utils.compare_version('1.10', self.client.version()['ApiVersion']) < 0:
@@ -576,6 +576,11 @@ class DockerManager:
         try:
             containers = do_create(count, params)
         except:
+            if self.module.params.get('user'):
+                self.client.login(self.module.params.get('user'),
+                                  password=self.module.params.get('password'),
+                                  email=self.module.params.get('email'),
+                                  registry="https://" + self.module.params.get('registry') + "/v1/")
             self.client.pull(params['image'])
             self.increment_counter('pull')
             containers = do_create(count, params)
@@ -665,6 +670,7 @@ def main():
             user            = dict(default=None),
             password        = dict(),
             email           = dict(),
+            registry        = dict(),
             hostname        = dict(default=None),
             env             = dict(type='list'),
             dns             = dict(),