Create an EnvoyProxy

Without a custom EnvoyProxy, the MKE default GatewayClass will provision a proxy using built-in defaults.

Create an EnvoyProxy service to use NodePort as the service type.

As an example, to set EnvoyProxy with NodePort:

Create the namespace.
```
kubectl create namespace gateway-test
```

Apply the EnvoyProxy manifest:

kubectl apply -n gateway-test -f - <<'EOF'
apiVersion: gateway.envoyproxy.io/v1alpha1
kind: EnvoyProxy
metadata:
  name: envoy-gateway-proxy
  namespace: gateway-test
spec:
  logging:
    level:
      default: info
  provider:
    type: Kubernetes
    kubernetes:
      envoyDeployment:
        container:
          image: mirantis/ucp-envoy-proxy:3.9.5
      envoyService:
        type: NodePort
        patch:
          type: StrategicMerge
          value:
            spec:
              externalTrafficPolicy: Cluster
EOF