contrib/vagrant: config cilium and operator in sysconfig dir for dev VM
contrib/vagrant: config cilium and operator in sysconfig dir for dev VM

Instead of having options split across system.service files and
'/etc/sysconfig/cilium', make the cilium and cilium-operator
configurations entirely in `/etc/sysconfig/cilium`

Signed-off-by: André Martins <bc9800b9d52a24cce72a73dd528afed53f10e5fc@cilium.io>

michi-covalent/cilium,michi-covalent/cilium,michi-covalent/cilium,cilium-team/cilium,tgraf/cilium,michi-covalent/cilium,tklauser/cilium,cilium/cilium,cilium/cilium,tgraf/cilium,cilium/cilium,michi-covalent/cilium,tgraf/cilium,tklauser/cilium,tgraf/cilium,tgraf/cilium,tklauser/cilium,cilium/cilium,tgraf/cilium,cilium-team/cilium,cilium/cilium,tklauser/cilium,tklauser/cilium