Fix the incompatible of docker-py 2.0.0

docker-py 2.0.0 is released with renaming docker.Client to
docker.APIClient. and with a new python package name "docker" rather
than "docker-py".
This patch support docker and docker-py packages.

Change-Id: Ib4400a4d2ce803191ee6215c5b28f0052970332c
Closes-Bug: #1668346

ansible/library/kolla_container_facts.py

@@ -52,6 +52,13 @@ EXAMPLES = '''
 import docker
 
 
+def get_docker_client():
+    try:
+        return docker.Client
+    except AttributeError:
+        return docker.APIClient
+
+
 def main():
     argument_spec = dict(
         name=dict(required=False, type='list', default=[]),
@@ -61,7 +68,7 @@ def main():
     module = AnsibleModule(argument_spec=argument_spec)
 
     results = dict(changed=False, _containers=[])
-    client = docker.Client(version=module.params.get('api_version'))
+    client = get_docker_client()(version=module.params.get('api_version'))
     containers = client.containers()
     names = module.params.get('name')
     if names and not isinstance(names, list):

ansible/library/kolla_docker.py

@@ -197,6 +197,13 @@ import traceback
 import docker
 
 
+def get_docker_client():
+    try:
+        return docker.Client
+    except AttributeError:
+        return docker.APIClient
+
+
 class DockerWorker(object):
 
     def __init__(self, module):
@@ -211,7 +218,7 @@ class DockerWorker(object):
             'version': self.params.get('api_version')
         }
 
-        self.dc = docker.Client(**options)
+        self.dc = get_docker_client()(**options)
 
     def generate_tls(self):
         tls = {'verify': self.params.get('tls_verify')}

ansible/library/kolla_toolbox.py

@@ -102,6 +102,13 @@ def gen_commandline(params):
     return command
 
 
+def get_docker_client():
+    try:
+        return docker.Client
+    except AttributeError:
+        return docker.APIClient
+
+
 def main():
     specs = dict(
         module_name=dict(type='str'),
@@ -109,7 +116,7 @@ def main():
         module_extra_vars=dict(type='json')
         )
     module = AnsibleModule(argument_spec=specs, bypass_checks=True)
-    client = docker.Client()
+    client = get_docker_client()()
     command_line = gen_commandline(module.params)
     kolla_toolbox = client.containers(filters=dict(name='kolla_toolbox',
                                                    status='running'))