[monitoring-plugins] Merge branch 'fix_mariadb' into maint-2.2

[Jan Wagner]

 Module: monitoring-plugins
 Branch: maint-2.2
 Commit: 351a38f1948a4d1a6d40c6ff7f9415a46fa6a16e
 Author: Jan Wagner <waja at cyconet.org>
   Date: Sun Jan 20 21:42:15 2019 +0100
    URL: https://www.monitoring-plugins.org/repositories/monitoring-plugins/commit/?id=351a38f

Merge branch 'fix_mariadb' into maint-2.2

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