Switch libp2p sigp gossipsub fork (#4999)

* switch libp2p source to sigp fork

* Shift the connection closing inside RPC behaviour

* Tag specific commits

* Add slow peer scoring

* Fix test

* Use default yamux config

* Pin discv5 to our libp2p fork and cargo update

* Upgrade libp2p to enable yamux gains

* Add a comment specifying the branch being used

* cleanup build output from within container
(prevents CI warnings related to fs permissions)

* Remove revision tags add branches for testing, will revert back once we're happy

* Update to latest rust-libp2p version

* Pin forks

* Update cargo.lock

* Re-pin to panic-free rust

---------

Co-authored-by: Age Manning <Age@AgeManning.com>
Co-authored-by: Pawan Dhananjay <pawandhananjay@gmail.com>
Co-authored-by: antondlr <anton@delaruelle.net>
Co-authored-by: Michael Sproul <michael@sigmaprime.io>

beacon_node/http_api/src/test_utils.rs

@@ -7,7 +7,7 @@ use beacon_processor::{BeaconProcessor, BeaconProcessorChannels, BeaconProcessor
 use directory::DEFAULT_ROOT_DIR;
 use eth2::{BeaconNodeHttpClient, Timeouts};
 use lighthouse_network::{
-    discv5::enr::{CombinedKey, EnrBuilder},
+    discv5::enr::CombinedKey,
     libp2p::swarm::{
         behaviour::{ConnectionEstablished, FromSwarm},
         ConnectionId, NetworkBehaviour,
@@ -138,7 +138,7 @@ pub async fn create_api_server<T: BeaconChainTypes>(
         syncnets: EnrSyncCommitteeBitfield::<T::EthSpec>::default(),
     });
     let enr_key = CombinedKey::generate_secp256k1();
-    let enr = EnrBuilder::new("v4").build(&enr_key).unwrap();
+    let enr = Enr::builder().build(&enr_key).unwrap();
     let network_globals = Arc::new(NetworkGlobals::new(
         enr.clone(),
         meta_data,