[SB][pyamqp][OTEL] pyamqp tracing is missing values for `amqpLink` and `amqpSession`

[nhtgl]

• Package Name: azure-servicebus==7.11.2
• Package Version: azure-servicebus==7.11.2, azure-core==1.29.4, azure-core-tracing-opentelemetry==1.0.0b11, azure-monitor-opentelemetry-exporter==1.0.0b17, opentelemetry-*==1.20.0/0.41b
• Operating System: macOS, Ubuntu, Debian
• Python Version: 3.10

Describe the bug
We get logs like

2023-09-22 07:40:48.193 [WARNING] [opentelemetry.attributes] __init__._clean_attribute -: Invalid type NoneType for attribute 'amqpLink' value. Expected one of ['bool', 'str', 'bytes', 'int', 'float'] or a sequence of those types
2023-09-22 07:40:48.040 [WARNING] [opentelemetry.attributes] __init__._clean_attribute -: Invalid type NoneType for attribute 'amqpSession' value. Expected one of ['bool', 'str', 'bytes', 'int', 'float'] or a sequence of those types

Looks like pyamqp distributed tracing is trying to add attributes to the span that are clearly empty.

To Reproduce
Use Azure SB with pyamqp and enable opentelemetry instrumentation. Try sending some messages.

Expected behavior
amqpLink and amqpSession is not an empty value or if it's an empty value then it's not added as attribute to the span.

Screenshots

Additional context
As a library user I would like to know if there's an issue, but this logs would come up too often and would only increase our bill.

[swathipil]

Hi @macieyng - Thanks for opening an issue! We'll take a look asap! Can you also provide the following info?

• Are you using the sync or async client?
• Do you see any other errors in the logs originating from the azure-servicebus library around the same time that this error pops up?