fix(routes): Add a /__lbheartbeat__ route. (#1807) r=vladikoff

Author: rfk

lib/routes/defaults.js

@@ -87,6 +87,14 @@ module.exports = (log, db) => {
           )
       }
     },
+    {
+      method: 'GET',
+      path: '/__lbheartbeat__',
+      handler: function heartbeat(request, reply) {
+        log.begin('Defaults.lbheartbeat', request)
+        reply({})
+      }
+    },
     {
       method: '*',
       path: '/v0/{p*}',

test/remote/misc_tests.js

@@ -65,6 +65,24 @@ describe('remote misc', function() {
     }
   )
 
+  it(
+    '/__heartbeat__ returns a 200 OK',
+    () => {
+      return request(config.publicUrl + '/__heartbeat__').spread((res) => {
+        assert.equal(res.statusCode, 200, 'http ok')
+      })
+    }
+  )
+
+  it(
+    '/__lbheartbeat__ returns a 200 OK',
+    () => {
+      return request(config.publicUrl + '/__lbheartbeat__').spread((res) => {
+        assert.equal(res.statusCode, 200, 'http ok')
+      })
+    }
+  )
+
   it(
     '/ returns version, git hash and source repo',
     testVersionRoute('/')