Description of problem:

You can enter a hostname to be sent to the DHCP. But you cannot delete it. At
least it was always reset to the hostname once-entered. Config files were reset too.

Version-Release number of selected component (if applicable):


How reproducible:

Always


Steps to Reproduce:
1. Set the use of DHCP and enter a hostname to send to DHCP server
2. launch network
3. Try to delete the hostname
  
Actual results:

You cannot delete the hostname


Expected results:

You can make the dhcp client to forget the hostname.

Additional info: