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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))
  }
})
```

cert = crypto.X509()
    subj = cert.get_subject()
    subj.C = 'AU'
    subj.ST = 'Some-State'
    subj.L = 'Some-Locality'
    subj.O = 'LocalStack Org'  
    subj.OU = 'Testing'
    subj.CN = 'localhost'
    
    
    serial_number = serial_number or 1001
    cert.set_version(2)
    cert.set_serial_number(serial_number)
    cert.gmtime_adj_notBefore(0)
    cert.gmtime_adj_notAfter(2 * 365 * 24 * 60 * 60)
    cert.set_issuer(cert.get_subject())
    cert.set_pubkey(k)
    alt_names = b'DNS:localhost,DNS:test.localhost.atlassian.io,IP:127.0.0.1'
    cert.add_extensions([
        crypto.X509Extension(b'subjectAltName', False, alt_names),
        crypto.X509Extension(b'basicConstraints', True, b'CA:false'),
        crypto.X509Extension(b'keyUsage', True, b'nonRepudiation,digitalSignature,keyEncipherment'),
        crypto.X509Extension(b'extendedKeyUsage', True, b'serverAuth')
    ])
    cert.sign(k, 'SHA256')
    cert_file = StringIO()
    key_file = StringIO()
    cert_file.write(to_str(crypto.dump_certificate(crypto.FILETYPE_PEM, cert)))
    key_file.write(to_str(crypto.dump_privatekey(crypto.FILETYPE_PEM, k)))
    cert_file_content = cert_file.getvalue().strip()