add restart handler

roles/minecraft-server/defaults/main.yaml

@@ -1,3 +1,3 @@
 mc_server_version: 15c777e2cfe0556eef19aab534b186c0c6f277e1
-mc_server_memory: 1G
+mc_server_memory: 1000M
 mc_server_ops: []

roles/minecraft-server/handlers/main.yaml

@@ -0,0 +1,5 @@
+- name: Restart server
+  systemd:
+    name: minecraft-server
+    daemon_reload: yes
+    state: restarted

roles/minecraft-server/tasks/main.yaml

@@ -24,6 +24,7 @@
   get_url:
     url: https://piston-data.mojang.com/v1/objects/{{ mc_server_version }}/server.jar
     dest: /srv/minecraft-server
+  notify: Restart server
 
 - name: Accept EULA
   copy:
@@ -34,21 +35,23 @@
   copy:
     content: "{{ mc_server_ops }}"
     dest: /srv/minecraft-server/ops.json
+  notify: Restart server
 
 - name: Install server script
   template:
     src: minecraft-server.sh
     dest: /srv/minecraft-server/minecraft-server.sh
+  notify: Restart server
 
 - name: Install minecraft-server systemd unit
   copy:
     src: minecraft-server.service
     dest: /etc/systemd/system/minecraft-server.service
     mode: 0644
+  notify: Restart server
 
 - name: Enable minecraft-server service
   systemd:
     name: minecraft-server
     daemon_reload: yes
-    state: started
     enabled: yes