is going to be reaped as an empty entry anyway.
Rely on flag being set in addnet, which would be the place of substance
to know if (and which) dhcp service needs restarting
git-svn-id: https://svn.code.sf.net/p/xcat/code/xcat-core/trunk@9450 8638fb3e-16cb-4fca-ae20-7b5d299a9bcd