Add fakes and tracing to armnetwork (Azure#21688)

* Add fakes and tracing to armnetwork

* update to latest azcore beta

* fix release date

Author: jhendrixMSFT

sdk/resourcemanager/network/armnetwork/CHANGELOG.md

@@ -1,5 +1,10 @@
 # Release History
 
+## 4.3.0-beta.1 (2023-10-09)
+### Features Added
+
+- Support for test fakes and OpenTelemetry trace spans.
+
 ## 4.2.0 (2023-09-22)
 ### Features Added
 

sdk/resourcemanager/network/armnetwork/README.md

@@ -87,6 +87,7 @@ client, err := armnetwork.NewInterfacesClient("subscriptionID", azfake.NewTokenC
 
 ## More sample code
 
+- [Creating a Fake](https://github.com/Azure/azure-sdk-for-go/blob/main/sdk/resourcemanager/network/armnetwork/fake_example_test.go)
 - [IP Address](https://aka.ms/azsdk/go/mgmt/samples?path=sdk/resourcemanager/network/ipaddress)
 - [Load Balancer](https://aka.ms/azsdk/go/mgmt/samples?path=sdk/resourcemanager/network/loadbalancer)
 - [Network Interface](https://aka.ms/azsdk/go/mgmt/samples?path=sdk/resourcemanager/network/networkInterface)