[ServiceBus] migrate tests from preparer to arm template

[swathipil]

Need to move ServiceBus tests over to using the EnvVariableLoader + ARM template to create resources. Currently we're using the ServiceBusPreparer file.

Should hopefully not run into any issues when enabling SB livetests on the sovereign cloud after this: #20517

[azure-sdk]

Label prediction was below confidence level 0.6 for Model:CategoryLabels: 'Mgmt:0.5709719,Client:0.42363626,Service:0.004181696'

[swathipil]

After discussing with other languages + internally, we realized that for both Event Hubs and Service Bus, we want to create a new resource for each test, since the state of the entities should be new/not populated. We will be keeping preparers. If in the future, there is infra for creating new resources per test using an ARM template, can re-open this issue.

[swathipil]

Look into using azure-mgmt-resource and deployment.deploy() decorator to deploy an arm template per test. azure-mgmt-resource is more stable than azure-mgmt-servicebus, which can then be removed from dev_requirements.txt. If not, try using the admin client.

[github-actions]

Hi @swathipil, we deeply appreciate your input into this project. Regrettably, this issue has remained unresolved for over 2 years and inactive for 30 days, leading us to the decision to close it. We've implemented this policy to maintain the relevance of our issue queue and facilitate easier navigation for new contributors. If you still believe this topic requires attention, please feel free to create a new issue, referencing this one. Thank you for your understanding and ongoing support.