add promtail role

roles/promtail/molecule/default/converge.yml

@@ -0,0 +1,5 @@
+---
+- name: Converge
+  hosts: all
+  roles:
+    - role: genlab.common.promtail

roles/promtail/molecule/default/molecule.yml

@@ -0,0 +1,24 @@
+---
+dependency:
+  name: galaxy
+driver:
+  name: docker
+platforms:
+  - name: ubuntu
+    image: geerlingguy/docker-ubuntu2204-ansible:latest
+    pre_build_image: true
+    command: ${MOLECULE_DOCKER_COMMAND:-""}
+    volumes:
+      - /sys/fs/cgroup:/sys/fs/cgroup:rw
+    cgroupns_mode: host
+    privileged: true
+provisioner:
+  name: ansible
+  playbooks:
+    converge: converge.yml
+verifier:
+  name: ansible
+lint: |
+  set -e
+  yamllint .
+  ansible-lint .

roles/promtail/molecule/default/verify.yml

@@ -0,0 +1,19 @@
+---
+- name: Verify
+  hosts: all
+  gather_facts: false
+  tasks:
+    # https://github.com/ansible/molecule/issues/3587#issuecomment-1158650179
+    - name: "Include default vars"
+      ansible.builtin.include_vars:
+        dir: "{{ lookup('env', 'MOLECULE_PROJECT_DIRECTORY') }}/defaults/"
+        extensions: [ 'yml' ]
+
+    - name: "Sanity check the Promtail daemon"
+      retries: 3
+      delay: 1
+      register: this
+      failed_when: "this.content != 'Ready'"
+      ansible.builtin.uri:
+        url: "http://localhost:{{ promtail_http_port }}/ready"
+        return_content: true