Werk #11957: Dropping support Ubuntu 19.10

Component	Linux distributions
Title	Dropping support Ubuntu 19.10
Date	Jan 15, 2021
Level	Trivial Change
Class	New Feature
Compatibility	Incompatible - Manual interaction might be required
Checkmk versions & editions	2.1.0b1 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT 2.0.0b5 Checkmk Community, Checkmk Pro, Checkmk Ultimate MT

Ubuntu 19.10 is depricated and therefore not supoorted by check_mk anymore.

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