Add back in the test CAS URL

- this was ded but is now live again, so let's move back
5 jobs for 2.3-dev in 2 minutes and 31 seconds (queued for 1 second)
Status Job ID Name Coverage
  Test
passed #3518
Go-py2.7

00:01:23

passed #3519
Go-py3.4

00:01:25

passed #3520
Go-py3.5

00:01:27

passed #3521
Go-py3.6

00:01:27

72.0%
 
  Lint
passed #3522
Go-flake8

00:01:02