title: Protractor tests failing after ugrading to angular5
body: <p>We have recently upgraded to angular 5. Since then my protractor tests started failing with reason " Error: Timeout - Async callback was not invoked within timeout specified by jasmine.DEFAULT_TIMEOUT_INTERVAL.". </p>
  
  <p>All these tests were working fine before. </p>
  
  <p>Protractor version : 5.2.0
  karma version: 1.7.0</p>
  
  <p>Highly appreciate your suggestions. </p>
  
  <p>Thanks </p>