Add initial support for Suse derivatives

[robin-checkmk]

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• Bugfix
• Feature
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What is the current behavior?

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No SUSE derivatives are supported by the server role as of now.

What is the new behavior?

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This is a first implementation of support for SUSE derivatives based on openSUSE Leap 15.
Be advised, that this support is currently experimental and likely far from production ready!

Other information

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We would love to collaborate with you to push this across the finish line!
If you are savvy with openSUSE or SLES, or if you actually run any of these distributions at home or in production, please do reach out. We are eager to get this finalized.