Rename bootstrap leader (#7906)

* Rename bootstrap leader to bootstrap validator

It's a normal validator as soon as other validators enter the
leader schedule.

* cargo fmt

* Fix build

Thanks @CriesofCarrots!

ledger/src/genesis_utils.rs

@@ -1,14 +1,14 @@
 pub use solana_runtime::genesis_utils::{
-    create_genesis_config_with_leader, GenesisConfigInfo, BOOTSTRAP_LEADER_LAMPORTS,
+    create_genesis_config_with_leader, GenesisConfigInfo, BOOTSTRAP_VALIDATOR_LAMPORTS,
 };
 use solana_sdk::pubkey::Pubkey;
 
-// same as genesis_config::create_genesis_config, but with bootstrap_leader staking logic
+// same as genesis_config::create_genesis_config, but with bootstrap_validator staking logic
 //  for the core crate tests
 pub fn create_genesis_config(mint_lamports: u64) -> GenesisConfigInfo {
     create_genesis_config_with_leader(
         mint_lamports,
         &Pubkey::new_rand(),
-        BOOTSTRAP_LEADER_LAMPORTS,
+        BOOTSTRAP_VALIDATOR_LAMPORTS,
     )
 }