test: Add missing headers in test_controller.c

After the big or.h refactoring, one single unit test file was missing two
headers for node_t and microdesc_t.

Signed-off-by: David Goulet <dgoulet@torproject.org>

src/test/test_controller.c

@@ -16,6 +16,8 @@
 
 #include "control_connection_st.h"
 #include "download_status_st.h"
+#include "microdesc_st.h"
+#include "node_st.h"
 
 static void
 test_add_onion_helper_keyarg_v3(void *arg)