Implement WLAN access.

roles/lmn_wlan/tasks/main.yml

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+## Make sure to use an initrd providing firmware:
+##   wget https://cdimage.debian.org/cdimage/firmware/testing/current/firmware.cpio.gz
+##   cat initrd.gz firmware.cpio.gz > initrd-fw.gz
+---
+- name: Configure WLAN for devices
+  community.general.nmcli:
+    conn_name: FVS-devices
+    type: wifi
+    ssid: FVS-devices
+    ifname: "{{ ansible_interfaces | select('search', 'wl.+') | first }}"
+    wifi_sec:
+      key-mgmt: wpa-psk
+      psk: "{{ wifipasswd }}"
+    autoconnect: true
+    state: present
+  when: not run_in_installer|default(false)|bool
+
+- name: Provide WLAN config during installation
+  template:
+    src: FVS-devices.nmconnection.j2
+    dest: /etc/NetworkManager/system-connections/FVS-devices.nmconnection
+    mode: '0600'
+  when: run_in_installer|default(false)|bool

roles/lmn_wlan/templates/FVS-devices.nmconnection.j2

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+[connection]
+id=FVS-devices
+type=wifi
+interface-name={{ ansible_interfaces | select('search', 'wl.+') | first }}
+
+[wifi]
+mode=infrastructure
+ssid=FVS-devices
+
+[wifi-security]
+key-mgmt=wpa-psk
+psk={{ wifipasswd }}
+
+[ipv4]
+method=auto
+
+[ipv6]
+addr-gen-mode=default
+method=auto
+
+[proxy]