Add resources to test EventHub Namespace, Event Hub, Authorization Rule and IoT Hub

[RustyTingz]

🎛 Description

Feature Request, to add functionality for Azure resources to enable testing of

• Event Hub Namespace - https://docs.microsoft.com/en-us/rest/api/eventhub/namespaces/get
• Event Hub Event Hub - https://docs.microsoft.com/en-us/rest/api/eventhub/eventhubs/get
• Event Hub Authorization Rule - https://docs.microsoft.com/en-us/rest/api/eventhub/eventhubs/getauthorizationrule
• IoT Hub - https://docs.microsoft.com/en-us/rest/api/iothub/iothubresource/get
• IoT Hub Consumer Group - https://docs.microsoft.com/en-us/rest/api/iothub/iothubresource/geteventhubconsumergroup
• IoT Hub Consumer Groups - https://docs.microsoft.com/en-us/rest/api/iothub/iothubresource/listeventhubconsumergroups

🌍 InSpec and Platform Version 1.3.0

[rmoles]

This has been covered by #175