Add NILinuxRT mod_hostname support
Add NILinuxRT mod_hostname support

* Coreutils hostname does not support a -f flag so an error message was
  printed whenever attempting to set the hostname. Switch to using more
  pythonic solution that does not have this issue.

Signed-off-by: Collin Richards <d7e2da987e47cdbaf4461968bd30e64e77b14311@ni.com>

saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt,saltstack/salt