CDRIVER-1571 Add missing r1.3 required includes

Author: bjori

tests/test-mongoc-topology-scanner.c

@@ -2,9 +2,11 @@
 
 #include "mongoc-util-private.h"
 #include "mongoc-client-private.h"
+#include "mongoc-uri-private.h"
 
 #include "mongoc-tests.h"
 #include "TestSuite.h"
+#include "test-conveniences.h"
 #include "mock_server/mock-server.h"
 #include "mock_server/mock-rs.h"
 #include "mock_server/future.h"