rsyncd: Fix misspelled config options

When refactoring the logging code, I spotted numerous references in the syslog file to invalid config options in the `rsyncd.conf` file. Based on the options, I modified them to what I assumed they were meant to be based on the [man page for rsyncd.conf](http://linux.die.net/man/5/rsyncd.conf).

These can be seen in the following example logs:
```
Oct  2 15:20:01 test-controller-0 rsyncd[32766]: Unknown Parameter encountered: "command"
Oct  2 15:20:01 test-controller-0 rsyncd[32766]: IGNORING unknown parameter "command"
Oct  2 15:20:01 test-controller-0 rsyncd[32766]: Unknown Parameter encountered: "user chroot"
Oct  2 15:20:01 test-controller-0 rsyncd[32766]: IGNORING unknown parameter "user chroot"
```

/cc @dlundquist