refactor(alertmanager): add state=absent support

roles/alertmanager/defaults/main/container.yml

@@ -1,11 +1,4 @@
 ---
-alertmanager_user: alertmanager
-alertmanager_version: 0.27.0
-alertmanager_base_path: /opt/alertmanager
-alertmanager_config_path: "{{ alertmanager_base_path }}/config"
-alertmanager_config_file: "{{ alertmanager_config_path }}/alertmanager.yml"
-alertmanager_data_path: "{{ alertmanager_base_path }}/data"
-
 alertmanager_container_name: alertmanager
 alertmanager_container_image_name: alertmanager
 alertmanager_container_image_namespace: prometheus/
@@ -32,8 +25,5 @@ alertmanager_container_volumes: >-
   {{ alertmanager_container_default_volumes
      + alertmanager_container_extra_volumes | default([]) }}
 alertmanager_container_restart_policy: "unless-stopped"
-
-alertmanager_config:
-  global: {}
-  route: {}
-  receivers: []
+alertmanager_container_state: >-2
+  {{ (alertmanager_state == 'present') | ternary('started', 'absent') }}

roles/alertmanager/defaults/main/main.yml

@@ -0,0 +1,14 @@
+---
+alertmanager_user: alertmanager
+alertmanager_version: 0.27.0
+alertmanager_state: present
+alertmanager_base_path: /opt/alertmanager
+alertmanager_config_path: "{{ alertmanager_base_path }}/config"
+alertmanager_config_file: "{{ alertmanager_config_path }}/alertmanager.yml"
+alertmanager_data_path: "{{ alertmanager_base_path }}/data"
+
+
+alertmanager_config:
+  global: {}
+  route: {}
+  receivers: []