[2.4.0] Checkmk Werk 17241 created: Support Azure PostgreSQL Flexible Server

[//]: # (werk v2) # Support Azure PostgreSQL Flexible Server key | value ---------- | --- date | 2024-08-21T14:54:11+00:00 version | 2.4.0b1 class | feature edition | cre component | checks level | 1 compatible | yes [Microsoft is retiring the Azure resource](https://learn.microsoft.com/en-us/azure/postgresql/single-server/… "Database for PostgreSQL single server" . With this Werk, we now support monitoring the recommended Azure resource "Database for PostgreSQL flexible server". In the rule "Microsoft Azure" under "Azure services to monitor", users can now select the new option "Database for PostgreSQL flexible server". Note that the former option "Database for PostgreSQL" was renamed to "Database for PostgreSQL single server" and stays in place. The metrics monitored for flexible servers correspond to those monitored for single servers and the same checks are used. See the [check plugin catalog](https://checkmk.com/integrations?distributions%5B%5D=check_mk&… for more details.