Don't allocate pseudo-TTY when creating containers

With a pseudo terminal, service is not treated as a daemon
and signals would not work as expected.

Change-Id: I16aa29a7924df51659d973a81d8005ae3d86f57b
Related-Bug: #1799642

ansible/library/kolla_docker.py

@@ -639,7 +639,6 @@ class DockerWorker(object):
             'image': self.params.get('image'),
             'name': self.params.get('name'),
             'volumes': volumes,
-            'tty': True
         }
 
     def create_container(self):

tests/test_kolla_docker.py

@@ -133,7 +133,6 @@ FAKE_DATA = {
         'image': 'myregistrydomain.com:5000/ubuntu:16.04',
         'name': 'test_container',
         'volumes': None,
-        'tty': True
     },
 
     'images': [