try with higher timeout

src/database/mongo.js

@@ -100,6 +100,7 @@ mongoModule.getConnectionOptions = function () {
 		reconnectTries: 3600,
 		reconnectInterval: 1000,
 		autoReconnect: true,
+		connectTimeoutMS: 60000,
 		useNewUrlParser: true,
 	};
 

src/database/mongo/pubsub.js

@@ -2,6 +2,6 @@
 
 var mubsub = require('mubsub-nbb');
 var db = require('../mongo');
-var client = mubsub(db.getConnectionString());
+var client = mubsub(db.getConnectionString(), db.getConnectionOptions());
 
 module.exports = client.channel('pubsub');

test/mocks/databasemock.js

@@ -35,7 +35,7 @@ nconf.defaults({
 
 if (!nconf.get('isCluster')) {
 	nconf.set('isPrimary', 'true');
-	nconf.set('isCluster', 'false');
+	nconf.set('isCluster', 'true');
 }
 
 var dbType = nconf.get('database');