chore: add port to connection details

[aiell0]

Description of your changes

Fixes #1458

I have:

• Read and followed Crossplane's contribution process.
• Run make reviewable to ensure this PR is ready for review.
• Added backport release-x.y labels to auto-backport this PR if necessary.

How has this code been tested

Tested with uptest and manually commented below

[aiell0]

/test-examples="examples/opensearch/v1beta1/domain.yaml"

[aiell0]

/test-examples="examples/opensearch/v1beta2/domain.yaml"

[aiell0]

/test-examples="examples/elasticache/v1beta1/cluster.yaml"

[aiell0]

/test-examples="examples/elasticache/v1beta2/cluster.yaml"

[aiell0]

/test-examples="examples/elasticache/v1beta1/cluster.yaml"

[turkenf]

Thank you for your effort, @aiell0; it would be great if you could update the description to show that you are testing manually and seeing the port value in the secret.

[aiell0]

@turkenf I had to change the code to reflect the correct type of port (number vs string) and it worked! Result is below:

lawrenceaiello@Lawrences-MacBook-Pro ~/Development/aiell0/provider-upjet-aws (add-port-to-elasticache-connection-details) $ k get secrets                                                                                                 <aws:dev>
NAME             TYPE                                DATA   AGE
sample-cluster   connection.crossplane.io/v1alpha1   2      7m14s
lawrenceaiello@Lawrences-MacBook-Pro ~/Development/aiell0/provider-upjet-aws (add-port-to-elasticache-connection-details) $ k describe secrets                                                                                            <aws:dev>
Name:         sample-cluster
Namespace:    default
Labels:       <none>
Annotations:  <none>

Type:  connection.crossplane.io/v1alpha1

Data
====
cluster_address:  50 bytes
port:             5 bytes
lawrenceaiello@Lawrences-MacBook-Pro ~/Development/aiell0/provider-upjet-aws (add-port-to-elasticache-connection-details) $ kubectl get secret sample-cluster -o jsonpath="{.data.port}" | base64 --decode
11211

[aiell0]

/test-examples="examples/elasticache/v1beta1/cluster.yaml"

[turkenf]

Thank you @aiell0, LGTM.