v0.11.1 Network update (#989)

* Minor log bumps

* Initial building of extended RPC methods

* Wire in extended RPC methods

* Merge initial peer management template

* Add a PeerDB and give the peer manager some basic functions

* Initial connection of peer manager

* Add peer manager to lighthouse

* Connect peer manager with new RPC methods

* Correct tests and metadata RPC

Co-authored-by: Diva <divma@protonmail.com>

beacon_node/client/src/lib.rs

@@ -57,6 +57,6 @@ impl<T: BeaconChainTypes> Client<T> {
 
     /// Returns the local libp2p ENR of this node, for network discovery.
     pub fn enr(&self) -> Option<Enr> {
-        self.network_globals.as_ref()?.local_enr()
+        self.network_globals.as_ref().map(|n| n.local_enr())
     }
 }