Change Details

added dcb settings according to : https://developer.gnome.org/NetworkManager/stable/settings-dcb.html

Added missing DCB(Data Center Bridging) settings according to : https://developer.gnome.org/NetworkManager/stable/settings-dcb.html

aAdded dcbmissing DCB(Data Center Bridging) settings according to : https://developer.gnome.org/NetworkManager/stable/settings-dcb.html