Restart systemd-udev on link changes

In case operator changes interface defenition (like name or alias) in
.link files [1], systemd-udev-trigger.service needs to be restarted
for system to discover them.

[1] https://www.freedesktop.org/software/systemd/man/latest/systemd.link.html

Change-Id: I66e96a71be1421543d8f35b613d728a2f860dfbf
Signed-off-by: Dmitriy Rabotyagov <dmitriy.rabotyagov@cleura.com>

handlers/main.yml

@@ -22,7 +22,10 @@
   with_items:
     - dbus
     - systemd-udevd
-  listen: Restart systemd-networkd
+    - systemd-udev-trigger
+  listen:
+    - Restart systemd-networkd
+    - Restart systemd-udev
   when:
     - systemd_networkd_distro_packages | length > 0
 
@@ -39,6 +42,26 @@
   tags:
     - systemd-networkd
 
+# NOTE: Workaround for https://bugzilla.redhat.com/show_bug.cgi?id=2406525
+- name: Clean-up systemd-udev override for EL
+  ansible.builtin.file:
+    path: /usr/lib/systemd/system/systemd-udev-trigger.service.d/systemd-udev-trigger-no-reload.conf
+    state: absent
+  listen:
+    - Restart systemd-udev
+  register: systemd_udev_trigger_no_reload
+  when:
+    - systemd_run_networkd | bool
+    - ansible_facts['os_family'] | lower == 'redhat'
+
+- name: Restart systemd-udev
+  ansible.builtin.systemd:
+    name: systemd-udev-trigger
+    state: restarted
+    daemon_reload: "{{ systemd_udev_trigger_no_reload.changed | bool }}"
+  when:
+    - systemd_run_networkd | bool
+
 - name: (RE)Gather facts post setup
   ansible.builtin.setup:
     gather_subset: "network,hardware,virtual"

tasks/main.yml

@@ -176,6 +176,7 @@
   notify:
     - Update initramfs
     - Restart systemd-networkd
+    - Restart systemd-udev
   tags:
     - systemd-networkd