p2p: bump maxAcceptConns and defaultDialTimout

On the test network, we've seen that it becomes harder to connect
if the queues are so short.

p2p/server.go

@@ -18,12 +18,12 @@ import (
 )
 
 const (
-	defaultDialTimeout      = 10 * time.Second
+	defaultDialTimeout      = 15 * time.Second
 	refreshPeersInterval    = 30 * time.Second
 	staticPeerCheckInterval = 15 * time.Second
 
 	// Maximum number of concurrently handshaking inbound connections.
-	maxAcceptConns = 10
+	maxAcceptConns = 50
 
 	// Maximum number of concurrently dialing outbound connections.
 	maxDialingConns = 10