Werk #13676: postgres_stat_database: Support DBs named with numbers only

Component Checks & agents
Title postgres_stat_database: Support DBs named with numbers only
Date Mar 25, 2022
Checkmk Editon Checkmk Raw (CRE)
Checkmk Version 2.2.0i1 2.1.0b4 2.0.0p23
Level Trivial Change
Class Bug Fix
Compatibility Compatible - no manual interaction needed

In case that PostgreSQL databases had names which contain only numbers, the discovery of the "PostgreSQL DB Statistics" previously failed.

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