Rename KeypairUtil to Signer (#8360) (#8366)

automerge

runtime/tests/noop.rs

@@ -1,10 +1,9 @@
-use solana_runtime::bank::Bank;
-use solana_runtime::bank_client::BankClient;
-use solana_runtime::loader_utils::create_invoke_instruction;
-use solana_sdk::client::SyncClient;
-use solana_sdk::genesis_config::create_genesis_config;
-use solana_sdk::pubkey::Pubkey;
-use solana_sdk::signature::KeypairUtil;
+use solana_runtime::{
+    bank::Bank, bank_client::BankClient, loader_utils::create_invoke_instruction,
+};
+use solana_sdk::{
+    client::SyncClient, genesis_config::create_genesis_config, pubkey::Pubkey, signature::Signer,
+};
 
 #[test]
 fn test_program_native_noop() {

runtime/tests/stake.rs

@@ -8,7 +8,7 @@ use solana_sdk::{
     client::SyncClient,
     message::Message,
     pubkey::Pubkey,
-    signature::{Keypair, KeypairUtil},
+    signature::{Keypair, Signer},
     system_instruction::create_address_with_seed,
     sysvar::{self, stake_history::StakeHistory, Sysvar},
 };

runtime/tests/storage.rs

@@ -13,7 +13,7 @@ use solana_sdk::{
     hash::{hash, Hash},
     message::Message,
     pubkey::Pubkey,
-    signature::{Keypair, KeypairUtil, Signature},
+    signature::{Keypair, Signature, Signer},
     system_instruction,
     sysvar::{
         rewards::{self, Rewards},