Make docker.ssladaptor a single file

Signed-off-by: Ben Firshman <ben@firshman.co.uk>

docker/client.py

@@ -9,8 +9,7 @@ import six
 import websocket
 
 
-from . import api, auth, constants, errors
-from .ssladapter import ssladapter
+from . import api, auth, constants, errors, ssladapter
 from .tls import TLSConfig
 from .transport import UnixAdapter
 from .utils import utils, check_resource, update_headers, kwargs_from_env

docker/ssladapter/__init__.py

-from .ssladapter import SSLAdapter  # flake8: noqa

docker/tls.py

 import os
 import ssl
 
-from . import errors
-from .ssladapter import ssladapter
+from . import errors, ssladapter
 
 
 class TLSConfig(object):

setup.py

@@ -50,7 +50,7 @@ setup(
     url='https://github.com/docker/docker-py/',
     packages=[
         'docker', 'docker.api', 'docker.transport', 'docker.utils',
-        'docker.utils.ports', 'docker.ssladapter', 'docker.types',
+        'docker.utils.ports', 'docker.types',
     ],
     install_requires=requirements,
     tests_require=test_requirements,

tests/unit/ssladapter_test.py

-from docker.ssladapter import ssladapter
+from docker import ssladapter
 
 try:
     from backports.ssl_match_hostname import (