[2.4.0] Checkmk Werk 17210 created: smart: Allow Usage with POSIX Shell

[//]: # (werk v2) # smart: Allow Usage with POSIX Shell key | value ---------- | --- date | 2024-10-08T14:13:08+00:00 version | 2.4.0b1 class | feature edition | cre component | checks level | 1 compatible | yes In the past, the agent plugin `smart` specified `/bin/bash` as an interpreter directive. bash is not available on FreeBSD. With this Werk, the interpreter is changed to `/bin/sh`. Moreover, the syntax within the plugin was adopted to be POSIX compliant.