set req.clean.parser to 'libpostal' when it's called

controller/libpostal.js

@@ -20,6 +20,7 @@ function setup(should_execute) {
         parsed_text.country = iso3166.to3(_.toUpper(parsed_text.country));
       }
 
+      req.clean.parser = 'libpostal';
       req.clean.parsed_text = parsed_text;
       debugLog.push(req, {parsed_text: req.clean.parsed_text});
     }

test/unit/controller/libpostal.js

@@ -149,6 +149,7 @@ module.exports.tests.parse_is_called = (test, common) => {
     controller(req, res, () => {
       t.deepEquals(req, {
         clean: {
+          parser: 'libpostal',
           parsed_text: 'replacement parsed_text'
         }
       });
@@ -184,6 +185,7 @@ module.exports.tests.iso2_conversion = (test, common) => {
     controller(req, res, () => {
       t.deepEquals(req, {
         clean: {
+          parser: 'libpostal',
           parsed_text: {
             locality: 'this is the locality'
           }
@@ -223,6 +225,7 @@ module.exports.tests.iso2_conversion = (test, common) => {
     controller(req, res, () => {
       t.deepEquals(req, {
         clean: {
+          parser: 'libpostal',
           parsed_text: {
             country: 'unknown country code'
           }
@@ -265,6 +268,7 @@ module.exports.tests.iso2_conversion = (test, common) => {
     controller(req, res, () => {
       t.deepEquals(req, {
         clean: {
+          parser: 'libpostal',
           parsed_text: {
             country: 'ISO3 COUNTRY CODE'
           }