Handle new ddtrace writer (#1458)

1.13 changes the location of the URL, let's handle it.

Author: therve

tests/conftest.py

@@ -261,7 +261,10 @@ def vcr_config():
     if tracer:
         from urllib.parse import urlparse
 
-        config["ignore_hosts"] = [urlparse(tracer._writer.agent_url).hostname]
+        if hasattr(tracer._writer, "agent_url"):
+            config["ignore_hosts"] = [urlparse(tracer._writer.agent_url).hostname]
+        else:
+            config["ignore_hosts"] = [urlparse(tracer._writer.intake_url).hostname]
 
     return config