network: add utils/convertIpv4PrefixToNetMask()
network: refactor code, add utils_ipconvert.go, rename formatIpXXX() to convertIpXXX()
network: update struct Ipv4RouteWrapper and Ipv4AddressWrapper, use Mask instead of Prefix
network: add utils/convertIpv6AddressToString() etc
network: complete wrapper for ipv6 key type
network: update autogen code
network: update autogen code, fix default values
network: update code about default key values
network: dispatch default key value just for json category