[2.4.0] Checkmk Werk 15323 created: mk_postgres: Adapt environment file parsing

[//]: # (werk v2) # mk_postgres: Adapt environment file parsing key | value ---------- | --- date | 2024-01-31T10:45:29+00:00 version | 2.4.0b1 class | fix edition | cre component | checks level | 1 compatible | yes Reading variables from the environment file was adapted: Lines starting with `#` will now be ignored.