CLI modules: improve docker version/info output processing, avoid querying for API version if it's not needed (#935)

* Don't assume that docker version/info JSON output contains the expected fields.

* Allow CLI modules to not require the API version.

* Add changelog fragment.

plugins/modules/docker_image_build.py

@@ -539,6 +539,7 @@ def main():
     client = AnsibleModuleDockerClient(
         argument_spec=argument_spec,
         supports_check_mode=True,
+        needs_api_version=False,
     )
 
     try: