Simplified network-topology-example.json
Config: simplified meta/type
Config: renamed name to hostname for consistency with adopted terminology
Config: added cpu
Config: improved operating_system section

More consistent with "ubus call system board" output
Config: "interfaces" more similar to ubus and nodewatcher-agent
Config: renamed radio0 to phy0
Config example: added virtual interface
Config example: added vlan
Config example: added bridge
Config: dns_servers and dns_search
Moved JSON examples in /examples