add coarse reverse logging so we can tell how often it's getting called

controller/coarse_reverse.js

@@ -92,6 +92,7 @@ function setup(service, should_execute) {
     service(centroid, isDNT(req), (err, results) => {
       // if there's an error, log it and bail
       if (err) {
+        logger.info(`[controller:coarse_reverse][error]`);
         logger.error(err);
         return next();
       }
@@ -101,6 +102,8 @@ function setup(service, should_execute) {
         return req.clean.layers.indexOf(granularity) !== -1;
       });
 
+      logger.info(`[controller:coarse_reverse][queryType:pip][result_count:${Object.keys(results).length}]`);
+
       // now remove everything from the response that is more granular than the
       // most granular layer requested.  that is, if req.clean.layers=['county'],
       // remove neighbourhoods, localities, and localadmins