Extend interface discovery to allow discovery of multiple service labels

[lbuhleie]

General information

This changes the Interface Discovery Ruleset and the Discovery itself to allow multiple service labels with individual matching conditions to be defined in a single rule.

Proposed changes

Prior to this the discovery ruleset only allowed a list of service labels that would be discovered if the "Conditions for this rule to apply" would apply. If you would want to discover multiple service labels based on different conditions, you would need multiple rules and with any one additional service label the amount of rules would be increasing exponentially.

This request introduces an additional setting, that extends the service label discovery by allowing multiple sets of service labels with explicit matching conditions (index, alias and description):

[github-actions]

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[lbuhleie]

I have read the CLA Document and I hereby sign the CLA or my organization already has a signed CLA.

[lbuhleie]

@englertor can you check this again, I do not see if further adapations are needed for the formatting / test checks to run successfully

[englertor]

@lbuhleie: Thanks for your contribution.

We add the label "tracked" as soon as our general criterias for PRs are fulfilled (e.g. passing tests, formatting ...). After that, we replicate it in our internal system to prioritize and assign.

So right now this PR is waiting for capacity from our developers and there is currently nothing left to do from your side.

[lbuhleie]

@englertor thank you for the explanation, then I'll just wait :)