service: Support setting type and target for db password secret

roles/service/meta/argument_specs.yaml

@@ -177,11 +177,24 @@ argument_specs:
             The password will also be available as the
             service_podman_secrets['{{ service_name }}-{{ service_database_type }}'] variable.
         type: str
-        required: false
         choices:
           - postgres
           - none
+        required: false
         default: none
+      service_database_secret_type:
+        description: Secret type for database secret for service container
+        type: str
+        choices:
+          - mount
+          - env
+        required: false
+        default: mount
+      service_database_secret_target:
+        description: Secret target for database secret for service container.
+        type: str
+        required: false
+        default: "{{ service_database_type }}"
       service_postgres_image:
         description: Postgresql image to use.
         type: str