Fix test

it was necessary to add a queue first before checking which
columns are available

Author: MarcialRosales

selenium/test/queuesAndStreams/list.js

@@ -44,6 +44,10 @@ describe('Queues and Streams management', function () {
   it('queue selectable columns', async function () {  
     await overview.clickOnOverviewTab()
     await overview.clickOnQueuesTab()
+    await queuesAndStreams.ensureAddQueueSectionIsVisible()
+    let queueName = "test_" + Math.floor(Math.random() * 1000)
+    await queuesAndStreams.fillInAddNewQueue({"name" : queueName, "type" : "classic"})
+
     await doWhile(async function() { return queuesAndStreams.getQueuesTable() },
       function(table) { 
         return table.length > 0