Use to_text helper function to handle bytes and unicode

lib/ansible/module_utils/lxd.py

@@ -33,7 +33,7 @@ import ssl
 from ansible.module_utils.urls import generic_urlparse
 from ansible.module_utils.six.moves.urllib.parse import urlparse
 from ansible.module_utils.six.moves import http_client
-from ansible.module_utils.six import PY2
+from ansible.module_utils._text import to_text
 
 # httplib/http.client connection using unix domain socket
 HTTPConnection = http_client.HTTPConnection
@@ -110,8 +110,7 @@ class LXDClient(object):
             self.connection.request(method, url, body=body)
             resp = self.connection.getresponse()
             resp_data = resp.read()
-            if not PY2:
-                resp_data = resp_data.decode('utf-8')
+            resp_data = to_text(resp_data, errors='surrogate_or_strict')
             resp_json = json.loads(resp_data)
             self.logs.append({
                 'type': 'sent request',