title: WebdriverIO: Not able to access browser capabilities when using multiRemote
body: <p>I have setup up my <code>wdio.conf.js</code> to use multiple browsers in my tests as described on the <a href="https://webdriver.io" rel="nofollow noreferrer">WebdriverIO</a> website. (<em>the capabilities are defined as an object, if using multiremote feature</em>)</p>
  
  <p>In my spec file, when I try to perform an action, such as <code>MyFirefoxBrowser.url('https://myUrl')</code> ... (what is happening?)</p>
  
  <p><strong>!Note:</strong> When I refer to the <code>browser</code> object directly, both Chrome and Firefox instances are spawned, as expected.</p>
  
  <p>I have tried referring the <code>wdio.conf.js</code> file inside my spec file using require, but it didn't work.</p>
  
  <p><strong>Spec file</strong> (<code>.js</code>):</p>
  
  <pre><code>describe('webdriver.io page', () =&gt; {
      it('should have the right title', () =&gt; {  
  
          myFirefoxBrowser.url('https://webdriver.io');
          const title = myFirefoxBrowser.getTitle()
          assert.strictEqual(title, 'WebdriverIO · Next-gen WebDriver test framework for Node.js')
       });
  });
  </code></pre>
  
  <p><strong>Capabilities</strong> (as defined in the <code>wdio.conf.js</code>):</p>
  
  <pre><code>capabilities: {
      myChromeBrowser: {
          capabilities: {
              browserName1: 'chrome'
          }
      },
      myFirefoxBrowser: {
          capabilities: {
              browserName: 'firefox'
          }
      }
  },
  </code></pre>
  
  <p><strong>Error:</strong></p>
  
  <blockquote>
    <p>ReferenceError: mychromeBrowser is not defined</p>
  </blockquote>
  
  <p><strong>Expected Results:</strong> Only the Firefox browser should navigate to the requested url.</p>