Use workerpool in master daemon
[ganeti-local] / daemons /
drwxr-xr-x   ..
-rwxr-xr-x 5211 ganeti-master
-rwxr-xr-x 9456 ganeti-masterd
-rwxr-xr-x 16144 ganeti-noded
-rwxr-xr-x 3114 ganeti-rapi
-rwxr-xr-x 12430 ganeti-watcher