adds validator flag to allow private ip addresses (backport #18850) (#18975)

* adds validator flag to allow private ip addresses (#18850)

(cherry picked from commit d2d5f36a3c)

# Conflicts:
#	accounts-cluster-bench/Cargo.toml
#	bench-tps/Cargo.toml
#	cli/Cargo.toml
#	core/benches/cluster_info.rs
#	core/src/banking_stage.rs
#	core/src/broadcast_stage.rs
#	core/src/broadcast_stage/broadcast_duplicates_run.rs
#	core/src/broadcast_stage/fail_entry_verification_broadcast_run.rs
#	core/src/broadcast_stage/standard_broadcast_run.rs
#	core/src/cluster_slots_service.rs
#	core/src/repair_service.rs
#	core/src/tvu.rs
#	core/src/validator.rs
#	dos/Cargo.toml
#	gossip/src/cluster_info.rs
#	gossip/src/crds_gossip_pull.rs
#	gossip/src/crds_gossip_push.rs
#	gossip/src/gossip_service.rs
#	local-cluster/Cargo.toml
#	local-cluster/src/cluster_tests.rs
#	local-cluster/tests/local_cluster.rs
#	rpc/Cargo.toml
#	rpc/src/rpc.rs
#	tokens/Cargo.toml
#	validator/Cargo.toml
#	validator/src/main.rs

* removes backport merge conflicts

Co-authored-by: behzad nouri <behzadnouri@gmail.com>

core/src/cluster_nodes.rs

@@ -246,8 +246,9 @@ mod tests {
                 sorted_stakes_with_index,
             },
         },
-        solana_sdk::timing::timestamp,
-        std::iter::repeat_with,
+        solana_sdk::{signature::Keypair, timing::timestamp},
+        solana_streamer::socket::SocketAddrSpace,
+        std::{iter::repeat_with, sync::Arc},
     };
 
     // Legacy methods copied for testing backward compatibility.
@@ -293,7 +294,11 @@ mod tests {
             .collect();
         // Add some staked nodes with no contact-info.
         stakes.extend(repeat_with(|| (Pubkey::new_unique(), rng.gen_range(0, 20))).take(100));
-        let cluster_info = ClusterInfo::new_with_invalid_keypair(this_node);
+        let cluster_info = ClusterInfo::new(
+            this_node,
+            Arc::new(Keypair::new()),
+            SocketAddrSpace::Unspecified,
+        );
         {
             let now = timestamp();
             let mut gossip = cluster_info.gossip.write().unwrap();