cleanup: WorkerPool, wrong variable name
[ganeti-local] / daemons /
drwxr-xr-x   ..
-rwxr-xr-x 14153 ganeti-masterd
-rwxr-xr-x 19274 ganeti-noded
-rwxr-xr-x 4296 ganeti-rapi
-rwxr-xr-x 12769 ganeti-watcher