[2.3.0] Checkmk Werk 16242 created: Kill forked processes by mk_oracle under AIX

[//]: # (werk v2) # Kill forked processes by mk_oracle under AIX key | value ---------- | --- date | 2024-03-06T12:43:13+00:00 version | 2.3.0b2 class | fix edition | cre component | checks level | 1 compatible | yes The agent plugin `mk_oracle` creates forked processes, e.g. from `sqlplus`. In order to reliable clean up stale processes, we kill now the whole process chain under AIX which corresponds to the stored `PID`. We introduce this only for `AIX` now as we have customers which are affected under that OS.