Rename InfoImporter -> LegacyInfoImporter (#8739)

Avoid namespace clash with the InfoImporter interface
that already exists in the v0.41 release series.

(cherry picked from commit 010eeef)

# Conflicts:
#	client/keys/migrate.go
#	crypto/keyring/keyring.go

client/keys/migrate.go

@@ -107,9 +107,15 @@ func runMigrateCmd(cmd *cobra.Command, args []string) error {
 		}
 
 		if keyType != keyring.TypeLocal {
+<<<<<<< HEAD
 			pubkeyArmor, err := legacyKb.ExportPubKey(keyName)
 			if err != nil {
 				return err
+=======
+			infoImporter, ok := migrator.(keyring.LegacyInfoImporter)
+			if !ok {
+				return fmt.Errorf("the Keyring implementation does not support import operations of Info types")
+>>>>>>> 010eeef45... Rename InfoImporter -> LegacyInfoImporter (#8739)
 			}
 
 			if err := migrator.ImportPubKey(keyName, pubkeyArmor); err != nil {

crypto/keyring/keyring.go

@@ -113,6 +113,16 @@ type Importer interface {
 	ImportPubKey(uid string, armor string) error
 }
 
+<<<<<<< HEAD
+=======
+// LegacyInfoImporter is implemented by key stores that support import of Info types.
+type LegacyInfoImporter interface {
+	// ImportInfo import a keyring.Info into the current keyring.
+	// It is used to migrate multisig, ledger, and public key Info structure.
+	ImportInfo(oldInfo Info) error
+}
+
+>>>>>>> 010eeef45... Rename InfoImporter -> LegacyInfoImporter (#8739)
 // Exporter is implemented by key stores that support export of public and private keys.
 type Exporter interface {
 	// Export public key