Check disabled tracing URLs based on regex

[jonasmiederer]

Currently the disabled tracing URLs are checked by testing whether the path starts with one of the provided excludelist paths

However if I want to exclude the root (/) from being traced, this is not possible. If an empty string is provided to disable_tracing_url, every path is disabled as every string starts with an empty string.

'ui'.startswith('')
True

A check using regex would solve the problem and also make it more flexible.

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[tcihak-fqa]

Is this change going to be released? I would like to exclude the root requests that an Azure App Service sends for "Always On".