Facility to generate a blocktree prune list using ledger tool (#5041)

automerge

core/src/local_cluster.rs

@@ -177,6 +177,7 @@ impl LocalCluster {
             &leader_voting_keypair,
             &leader_storage_keypair,
             None,
+            true,
             &config.validator_configs[0],
         );
 
@@ -308,6 +309,7 @@ impl LocalCluster {
             &voting_keypair,
             &storage_keypair,
             Some(&self.entry_point_info),
+            true,
             &validator_config,
         );
 
@@ -561,6 +563,7 @@ impl Cluster for LocalCluster {
             &fullnode_info.voting_keypair,
             &fullnode_info.storage_keypair,
             None,
+            true,
             config,
         );