Bug 1013429

Fix displayed text when the Jenkins server is deleted while applications
with Jenkins jobs remain.

Before:
```
Deleting application 'jenkins' ... deleted

Removed corresponding client: jenkins-client-1Removed corresponding client: jenkins-client-1
```

After:
```
Deleting application 'jenkins' ... deleted

Removed corresponding client: jenkins-client-1 for rack2
Removed corresponding client: jenkins-client-1 for rack
```