control:fanctl: `reload` option only for JSON

Similar to how the `dump` option is completely removed when not JSON
configuration based, only show the `reload` option when JSON is enabled.
There is no support for reloading a YAML based configuration, so this
change removes the `reload` option over the previous error message that
was returned.

Signed-off-by: Matthew Barth <msbarth@us.ibm.com>
Change-Id: Idab7903edf429051b80d4a766fd8201514663eb6
1 file changed