on enabling server hard-set topology uci option to subnet

Default topology net30 is deprecated and for legacy clients only (year 2014).
By using the topology subnet directive, it makes the routing table easier to read and simplifies the routing.
2 jobs for uci/configure-ovpn-topology-subnet in 1 minute and 22 seconds (queued for 1 second)
Status Job ID Name Coverage
passed flake8 #465392


passed test_python3 #465393