don't use /srv on docker manager

ansible/roles/kms/tasks/main.yml

@@ -1,15 +1,8 @@
-- name: Create working directory
-  file:
-    path: /srv/kms
-    state: directory
-
-- name: Copy Docker stack file
-  template:
-    src: "{{ role_path }}/docker-stack.yml.j2"
-    dest: /srv/kms/docker-stack.yml
-
 - name: Deploy Docker stack
   docker_stack:
     name: kms
     compose:
-      - /srv/kms/docker-stack.yml
+      - "{{ lookup('template', '{{ role_path }}/docker-stack.yml.j2') | from_yaml }}"
+  environment:
+    DOCKER_HOST: ssh://root@maestro.dmz
+  delegate_to: localhost