Upgrade 2.x to 3.0.1 startup warnings

[skhilliard]

Upgrading from 2.x to 3.0.1 I am seeing some warnings logged that look a little worrysome...

@azure/opentelemetry-instrumentation-azure-sdk [
  'Module @azure/core-tracing has been loaded before @azure/opentelemetry-instrumentation-azure-sdk so it might not work, please initialize it before requiring @azure/core-tracing'
]```

and 

Accessing resource attributes before async attributes settled []

...are these of concern?  If so, how can they be fixed?

[JacksonWeber]

Regarding the first warning: #1316. Looking into resolving this with the Azure SDK libraries throwing the warning.

The async attributes settled warning is thrown by OpenTelemetry and occurs because we populate resource attributes asynchronously when trying to determine if the application is running in a VM environment. We are also looking into ways to mitigate this warning as well.

[skhilliard]

@JacksonWeber Any updates for this? Thanks!

[rassiju06]

I have the same issue.

[JacksonWeber]

@skhilliard @rassiju06 As of 3.1.0 the warnings surrounding performance counter metrics are resolved, however the warnings surrounding package loading and resource attributes are not. Please refer to #1107 if you're looking to suppress these warnings.