DHCP Config: Add DomainEnabled D-bus property

This commit implements DomainEnabled D-bus property for DHCP
configuration.
When DomainEnabled is set to true then the domain names received from
the DHCP server

Tested by:
Set DomainEnabled D-bus property to true or false
Check domain name configured on BMC

Change-Id: Ia3db5f5054d4c758be336851175b05ddc05d2eda
Signed-off-by: Ravi Teja <raviteja28031990@gmail.com>
3 files changed