gh-ost-test-mysql-master for localtests/test.sh missing?

I'm trying to setup ghost locally and I noticed that `localtests/test.sh` doesn't seems to work due to the missing command `gh-ost-test-mysql-master` and `gh-ost-test-mysql-replica`. The specific error while running this is:

```
localtests/test.sh: line 23: gh-ost-test-mysql-master: command not found
Cannot verify gh-ost-test-mysql-master
```

From what I can tell in the code, it seems like this may be an alias to the master mysql/replica instance (perhaps via mysql -u .. -h ..). However, I don't see it being defined anywhere in the code. Is this a bug?