set default for CIDR netmask to make CI tests pass when...

set default for CIDR netmask to make CI tests pass when ansible_facts.default_ipv4.prefix is not available

tasks/configure_network.yml

@@ -30,9 +30,6 @@
 # to avoid any interference and hand over management for that interface to
 # `systemd-networkd`. Now, '/etc/network/interfaces' will only contain the
 # config for the loopback interface.
-- name: IP
-  ansible.builtin.debug:
-    msg: "{{ ansible_facts.default_ipv4 }}"
 
 - name: deploy network interface config
   ansible.builtin.template:

templates/etc/systemd/network/ens192.network.j2

@@ -2,7 +2,7 @@
 Name={{ ansible_facts.default_ipv4.interface }}
 
 [Network]
-Address={{ ansible_facts.default_ipv4.address }}/{{ ansible_facts.default_ipv4.prefix }}
+Address={{ ansible_facts.default_ipv4.address }}/{{ ansible_facts.default_ipv4.prefix | default("24") }}
 Gateway={{ ansible_facts.default_ipv4.gateway }}
 DNS=194.95.142.200
 DNS=194.95.142.203