kad: Update republish and expiration interval to new spec

[mxinden]

Update the libp2p-kad default values to the Kademlia specification revision 2 libp2p/specs#451, namely the republish interval and the expiration interval.

rust-libp2p/protocols/kad/src/behaviour.rs

Lines 182 to 196 in 4fe518d

	impl Default for KademliaConfig {
	fn default() -> Self {
	KademliaConfig {
	kbucket_pending_timeout: Duration::from_secs(60),
	query_config: QueryConfig::default(),
	protocol_config: Default::default(),
	record_ttl: Some(Duration::from_secs(36 * 60 * 60)),
	record_replication_interval: Some(Duration::from_secs(60 * 60)),
	record_publication_interval: Some(Duration::from_secs(24 * 60 * 60)),
	record_filtering: KademliaStoreInserts::Unfiltered,
	provider_publication_interval: Some(Duration::from_secs(12 * 60 * 60)),
	provider_record_ttl: Some(Duration::from_secs(24 * 60 * 60)),
	connection_idle_timeout: Duration::from_secs(10),
	kbucket_inserts: KademliaBucketInserts::OnConnected,
	caching: KademliaCaching::Enabled { max_peers: 1 },