Bug: Service Map does not show S3 bucket name

The service map in CloudWatch / X-Ray does not show the bucket name:

I guess it is similar to the following issue (just for S3 instead of SQS): https://github.com/aws/aws-xray-sdk-java/issues/373

The file https://github.com/aws/aws-xray-sdk-java/blob/master/aws-xray-recorder-sdk-aws-sdk-v2/src/main/resources/com/amazonaws/xray/interceptors/DefaultOperationParameterWhitelist.json seems to be misconfigured.

The name of the bucket name key is wrong. It is "BucketName", but it should be only "Bucket". See the debugger inside the DeleteObjectRequest class ("BucketName" does not match "Bucket" inside the switch case):

For example
```json
"DeleteObject": {
"request_parameters": [
"Key",
"BucketName"
]
},
```
should probably be
```json
"DeleteObject": {
"request_parameters": [
"Key",
"Bucket"
]
},
```