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# Type of request: This is a ...

[x ] bug report
[ ] feature request

# Detailed description

Not able to use the edge service to write metric data to cloudwatch via the javascript aws-sdk.

However, It **DOES** work when using the deprecated cloudwatch port.

## Expected behavior

Metric data to be visible when calling `awslocal cloudwatch list-metrics`

## Actual behavior

404 from edge service. No metric data is persisted, localstack instance logs the following info:

```
INFO:localstack.services.edge: Unable to determine forwarding port for API "monitoring" - please make sure this API is enabled via the SERVICES configuration
```

# Steps to reproduce

Run JS code in "Client code" section.
See 404 Error

## Command used to start LocalStack

`TMPDIR=/tmp/localstack docker-compose up`

## Client code (AWS SDK code snippet, or sequence of "awslocal" commands)

```js
const AWS = require('aws-sdk')
const cw = new AWS.CloudWatch({
  endpoint: 'http://localhost:4566',
})

const data = {
  Namespace: 'ns',
  MetricData: [
    {
      MetricName: 'metric-name',
      Timestamp: new Date(),
      Value: 12345,
      Unit: 'Milliseconds',
      Dimensions: [
        { Name: 'Environment', Value: 'local' },
      ]
    }
  ]
}

cw.putMetricData(data, (err, data) => {
  if (err) {
      console.log('Error', err)
  } else {
      console.log('Success', JSON.stringify(data))
  }
})
```

global SEQUENCE_NUMBER_COUNTER
    kinesis = aws_stack.connect_to_service('kinesis')
    for record in records:
        if 'SequenceNumber' not in record['dynamodb']:
            record['dynamodb']['SequenceNumber'] = str(SEQUENCE_NUMBER_COUNTER)
            SEQUENCE_NUMBER_COUNTER += 1
        table_arn = record['eventSourceARN']
        stream = DDB_STREAMS.get(table_arn)
        if stream:
            table_name = table_name_from_stream_arn(stream['StreamArn'])
            stream_name = get_kinesis_stream_name(table_name)
            kinesis.put_record(StreamName=stream_name, Data=json.dumps(record), PartitionKey='TODO')
@app.route('/', methods=['POST'])
def post_request():
    action = request.headers.get('x-amz-target')
    data = json.loads(to_str(request.data))
    result = {}
    kinesis = aws_stack.connect_to_service('kinesis')
    if action == '%s.ListStreams' % ACTION_HEADER_PREFIX:
        result = {
            'Streams': list(DDB_STREAMS.values())
        }
    elif action == '%s.DescribeStream' % ACTION_HEADER_PREFIX:
        for stream in DDB_STREAMS.values():
            if stream['StreamArn'] == data['StreamArn']:
                result = {
                    'StreamDescription': stream
                }