Symlink the role into tests

Ansible Core 2.19 has a different set of default paths to look for roles
so molecule test is failing now.

Let's create a symlink of the role into the tests repo for the test
playbook to find content of the role easily.

Change-Id: Ie004fe62d37ad704d649a5e71e5ab3776491a521
Signed-off-by: Dmitriy Rabotyagov <dmitriy.rabotyagov@cleura.com>

molecule/default/molecule.yml

@@ -10,7 +10,7 @@ driver:
 
 platforms:
   - name: "systemd-service-${MOLECULE_SCENARIO_NAME}"
-    image: "${DOCKER_REGISTRY:-quay.io/gotmax23}/${DOCKER_IMAGE_TAG:-debian-systemd:bookworm}"
+    image: "${DOCKER_REGISTRY:-quay.io/gotmax23}/${DOCKER_IMAGE_TAG:-debian-systemd:trixie}"
     command: ${DOCKER_COMMAND:-""}
     pre_build_image: true
     privileged: true

tests/roles/systemd_networkd

@@ -0,0 +1 @@
+../../

tests/side_effect.yml

@@ -16,10 +16,10 @@
   hosts: network_hosts
   gather_facts: true
   roles:
-    - role: "{{ playbook_dir | dirname | basename }}"
+    - role: systemd_networkd
   vars:
     systemd_interface_cleanup: true
-    systemd_run_networkd: yes
+    systemd_run_networkd: true
     systemd_netdevs:
       - NetDev:
           Name: dummy2

tests/test.yml

@@ -18,7 +18,7 @@
   hosts: network_hosts
   gather_facts: true
   roles:
-    - role: "{{ playbook_dir | dirname | basename }}"
+    - role: systemd_networkd
   vars:
     systemd_networkd_link:
       MACAddressPolicy: "persistent"