Rewrite the docker_network_info module (#409)

* Rewrite the docker_network_info module.

* Improve error messages.

plugins/modules/docker_network_info.py

@@ -27,15 +27,13 @@ options:
     type: str
     required: yes
 extends_documentation_fragment:
-- community.docker.docker
-- community.docker.docker.docker_py_1_documentation
+- community.docker.docker.api_documentation
 
 
 author:
   - "Dave Bendit (@DBendit)"
 
 requirements:
-  - "L(Docker SDK for Python,https://docker-py.readthedocs.io/en/stable/) >= 1.8.0"
   - "Docker API >= 1.25"
 '''
 
@@ -102,16 +100,11 @@ import traceback
 
 from ansible.module_utils.common.text.converters import to_native
 
-try:
-    from docker.errors import DockerException
-except ImportError:
-    # missing Docker SDK for Python handled in ansible.module_utils.docker.common
-    pass
-
-from ansible_collections.community.docker.plugins.module_utils.common import (
+from ansible_collections.community.docker.plugins.module_utils.common_api import (
     AnsibleDockerClient,
     RequestException,
 )
+from ansible_collections.community.docker.plugins.module_utils._api.errors import DockerException
 
 
 def main():
@@ -133,10 +126,10 @@ def main():
             network=network,
         )
     except DockerException as e:
-        client.fail('An unexpected docker error occurred: {0}'.format(to_native(e)), exception=traceback.format_exc())
+        client.fail('An unexpected Docker error occurred: {0}'.format(to_native(e)), exception=traceback.format_exc())
     except RequestException as e:
         client.fail(
-            'An unexpected requests error occurred when Docker SDK for Python tried to talk to the docker daemon: {0}'.format(to_native(e)),
+            'An unexpected requests error occurred when trying to talk to the Docker daemon: {0}'.format(to_native(e)),
             exception=traceback.format_exc())