Fix for #6296: Deterministic RNG in peer DAS publish block tests (#7192)

#6296: Deterministic RNG in peer DAS publish block tests


  Made test functions to call publish-block APIs with true for the deterministic RNG boolean parameter while production code with false. This will deterministically shuffle columns for unit tests under broadcast_validation_tests.rs.

beacon_node/client/Cargo.toml

@@ -31,6 +31,7 @@ logging = { workspace = true }
 metrics = { workspace = true }
 monitoring_api = { workspace = true }
 network = { workspace = true }
+rand = { workspace = true }
 sensitive_url = { workspace = true }
 serde = { workspace = true }
 serde_json = { workspace = true }

beacon_node/client/src/builder.rs

@@ -33,6 +33,8 @@ use genesis::{interop_genesis_state, Eth1GenesisService, DEFAULT_ETH1_BLOCK_HASH
 use lighthouse_network::{prometheus_client::registry::Registry, NetworkGlobals};
 use monitoring_api::{MonitoringHttpClient, ProcessType};
 use network::{NetworkConfig, NetworkSenders, NetworkService};
+use rand::rngs::{OsRng, StdRng};
+use rand::SeedableRng;
 use slasher::Slasher;
 use slasher_service::SlasherService;
 use std::net::TcpListener;
@@ -210,7 +212,10 @@ where
             .event_handler(event_handler)
             .execution_layer(execution_layer)
             .import_all_data_columns(config.network.subscribe_all_data_column_subnets)
-            .validator_monitor_config(config.validator_monitor.clone());
+            .validator_monitor_config(config.validator_monitor.clone())
+            .rng(Box::new(
+                StdRng::from_rng(OsRng).map_err(|e| format!("Failed to create RNG: {:?}", e))?,
+            ));
 
         let builder = if let Some(slasher) = self.slasher.clone() {
             builder.slasher(slasher)