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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))
  }
})
```

if enabled:
        
        stream_name = get_kinesis_stream_name(table_name)
        aws_stack.create_kinesis_stream(stream_name)
        latest_stream_label = latest_stream_label or 'latest'
        stream = {
            'StreamArn': aws_stack.dynamodb_stream_arn(
                table_name=table_name, latest_stream_label=latest_stream_label),
            'TableName': table_name,
            'StreamLabel': latest_stream_label,
            'StreamStatus': 'ENABLED',
            'KeySchema': [],
            'Shards': []
        }
        table_arn = aws_stack.dynamodb_table_arn(table_name)
        DDB_STREAMS[table_arn] = stream
        
        event_publisher.fire_event(event_publisher.EVENT_DYNAMODB_CREATE_STREAM,
            payload={'n': event_publisher.get_hash(table_name)})
def forward_events(records):