Remove hex output from keys; standardize on B64 for CLI output. This (#1831)

aligns with all other interactions which use B64 encoding for bytes.

command/server.go

@@ -2,7 +2,6 @@ package command
 
 import (
 	"encoding/base64"
-	"encoding/hex"
 	"fmt"
 	"net"
 	"net/http"
@@ -525,8 +524,7 @@ func (c *ServerCommand) Run(args []string) int {
 				"    "+export+" VAULT_ADDR="+quote+"http://"+config.Listeners[0].Config["address"]+quote+"\n\n"+
 				"The unseal key and root token are reproduced below in case you\n"+
 				"want to seal/unseal the Vault or play with authentication.\n\n"+
-				"Unseal Key (hex)   : %s\nUnseal Key (base64): %s\nRoot Token: %s\n",
-			hex.EncodeToString(init.SecretShares[0]),
+				"Unseal Key: %s\nRoot Token: %s\n",
 			base64.StdEncoding.EncodeToString(init.SecretShares[0]),
 			init.RootToken,
 		))