Remove network lock (#840)

* Initial work on removing libp2p lock

* Removes lock from libp2p service

* Completed network lock removal

* Correct network termination future

* Correct fmt issues

* Remove Drop implementation for network service

* Address reviewers suggestions

* Fix dht persistence test (#844)

* Fix persistence test

* Block until dht is persisted

* Fix libp2p test

* Correct test ordering check

* Remove expensive tests from debug testing

Co-authored-by: Pawan Dhananjay <pawandhananjay@gmail.com>

beacon_node/beacon_chain/src/builder.rs

@@ -529,6 +529,7 @@ fn genesis_block<T: EthSpec>(
     Ok(genesis_block)
 }
 
+#[cfg(not(debug_assertions))]
 #[cfg(test)]
 mod test {
     use super::*;