Azure Service Bus Emulator Support

[stuart-sharein]

Would be great if support could be added for the use of the azure service bus emulator for local/test environments.

As I understand it the emulator doesnt currently support the use of ServiceBusAdministrationClient and instead needs to be hard configured with topics/subscription with a json config file.

The azure transport makes calls to this client during connection and configuring subscriptions. Ideally there would be a switch in the settings to disable these calls here.

[stuart-sharein]

Have suggested a possible solution to support this here:

#1688

Sorry I'm afraid I dont have any more time to spend on this at the moment.