# Functions
GetDNS parses a subnet in CIDR format as defined by RFC 4632 and RFC 4291 and returns the IP address of the Cluster DNS.
NewClusterNetworkCfg assigns a serviceCIDR value and returns a pointer to the clusterNetworkCfg struct.
NewConfig returns a Config struct pertaining to the cluster configuration.
ValidateCIDR uses the parseCIDR from network package to validate the format of the CIDR.