Foreman » Smart Proxy

We are changing how Foreman treats leases, it no longer attempts to delete them during DHCP orchestration (see #19634), this is a tracking ticket to change behavior of our DHCP create API call. Previously, it ignored any existing (thus conflicting) leases, which works fine with ISC DHCP. But other servers (MS DHCP for example) might not work like that, we need to do explicit lease delete in this case.