cmd/geth: rename --whitelist to --eth.requiredblocks (#24505)

* cmd, eth: Rename whitelist argument to peer.requiredblocks

* eth/ethconfig: document PeerRequiredBlocks better

* cmd/utils: rename new flag to --eth.requiredblocks

Co-authored-by: Felix Lange <fjl@twurst.com>

cmd/geth/usage.go

@@ -53,7 +53,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 			utils.EthStatsURLFlag,
 			utils.IdentityFlag,
 			utils.LightKDFFlag,
-			utils.WhitelistFlag,
+			utils.EthPeerRequiredBlocksFlag,
 		},
 	},
 	{
@@ -225,6 +225,7 @@ var AppHelpFlagGroups = []flags.FlagGroup{
 		Name: "ALIASED (deprecated)",
 		Flags: []cli.Flag{
 			utils.NoUSBFlag,
+			utils.LegacyWhitelistFlag,
 		},
 	},
 	{