relay: Avoid extra LOG_NOTICE for every new descriptor batch

Commit 56c5e282a7 suppressed that same log
statement in directory_info_has_arrived() for microdescriptors so do the same
for the descriptors. As the commit says, we already have the bootstrap
progress for this.

Fixes #23861

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

changes/bug23861

@@ -0,0 +1,5 @@
+  o Minor bugfixes (logging, relay):
+    - Suppress a log notice when relay descriptors arrive. We already have a
+      bootstrap progress for this so no need to log notice everytime tor
+      receives relay descriptors. Microdescriptors behave the same. Fixes bug
+      23861; bugfix on 0.2.8.2-alpha.

src/or/directory.c

@@ -2889,7 +2889,7 @@ handle_response_fetch_desc(dir_connection_t *conn,
                                   conn->router_purpose,
                                   conn->base_.address)) {
         time_t now = approx_time();
-        directory_info_has_arrived(now, 0, 0);
+        directory_info_has_arrived(now, 0, 1);
       }
     }
   }