Bug bash to find samples for Service Bus that need to use the latest package

[AlexGhiondea]

Update from Ramya Rao (@ramya-rao-a)

Review the Python samples for Service Bus in the below locations to find the ones that do not use the latest version of the Service Bus package. Please note that some of these maybe using the preview version of the latest Service Bus package, these need to be identified as well. Update this issue with the list of samples that need updating.

• Service Bus Python samples repos under Azure-samples org
• Service Bus Python samples under docs.microsoft.com/samples

Additionally, ensure the samples that live next to the source code for Service Bus in this repo shows up in Service Bus Python samples under docs.microsoft.com/samples. This is done by setting up the right metadata. Ensure that these samples are not outdated.

[rakshith91]

• the samples read me has --pre flag in the pip install instructions.
  -All the samples look good

[ramya-rao-a]

The note on preview from samples readme is being removed in #15881

Thanks Rakshith Bhyravabhotla (@rakshith91)!