Add and update host variable files for various servers

- Created new host variable file for `iam-nd.oopen.de` with network and cron configurations.
- Created new host variable file for `test.mariadb.oopen.de` with cron environment entries.
- Updated `file-km.anw-km.netz.yml.BAK.2026-04-18-1218` with network interface configurations and DNS settings.
- Modified `gw-campus.oopen.de.yml` to change device names for network interfaces.
- Updated `nd-archiv.warenform.de.yml`, `nd-live.warenform.de.yml`, `nd.warenform.de.yml`, `web0.warenform.de.yml`, `web1.warenform.de.yml`, and `web2.warenform.de.yml` to replace `wkhtmltopdf` with `weasyprint` in the list of extra packages.
- Updated `o26.oopen.de.yml` to correct SSH key destination and change backup job script path.
- Added `iam-nd.oopen.de` to the hosts file for server management.

host_vars/gw-campus.oopen.de.yml

@@ -90,8 +90,8 @@ network_interfaces:
       - /sbin/ifconfig eno4 up
 
 
-  - device: eno6
-    headline: eno6 -  Management Network Campus - network 10.72.1.0/24
+  - device: eno6np1
+    headline: eno6np1 -  Management Network Campus - network 10.72.1.0/24
     auto: true
     family: inet
     method: static
@@ -99,8 +99,8 @@ network_interfaces:
     netmask: 24
 
 
-  - device: eno7
-    headline: eno7 - network 192.168.11.0/24 (LAN Stockhausen)
+  - device: eno7np2
+    headline: eno7np2 - network 192.168.11.0/24 (LAN Stockhausen)
     auto: true
     family: inet
     method: static