Fix bucket policy return err when no policy exist

pkg/remote/aws/repository/s3_repository.go

@@ -58,6 +58,11 @@ func (s *s3Repository) GetBucketPolicy(bucketName, region string) (*string, erro
 			&s3.GetBucketPolicyInput{Bucket: &bucketName},
 		)
 	if err != nil {
+		if awsErr, ok := err.(awserr.Error); ok {
+			if awsErr.Code() == "NoSuchBucketPolicy" {
+				return nil, nil
+			}
+		}
 		return nil, errors.Wrapf(
 			err,
 			"Error listing bucket policy %s",

pkg/remote/aws/repository/s3_repository_test.go

@@ -297,6 +297,20 @@ func Test_s3Repository_GetBucketPolicy(t *testing.T) {
 			},
 			want: awssdk.String("foobar"),
 		},
+		{
+			name:       "get bucket location on 404",
+			bucketName: "test-bucket",
+			region:     "us-east-1",
+			mocks: func(client *awstest.MockFakeS3) {
+				client.On("GetBucketPolicy", &s3.GetBucketPolicyInput{
+					Bucket: aws.String("test-bucket"),
+				}).Return(
+					nil,
+					awserr.New("NoSuchBucketPolicy", "", nil),
+				).Once()
+			},
+			want: nil,
+		},
 		{
 			name:       "get bucket location when error",
 			bucketName: "test-bucket",