Use simpler file structure

playbook.yml

@@ -1,5 +1,29 @@
 - hosts: gitlab
-  become: yes
+  become: true
   become_method: sudo
+  pre_tasks:
+    - name: install packages
+      apt:
+        name: '{{ packages }}'
+        state: present
+    - include_role:
+        name: common
+        tasks_from: 'setup.yml'
+    - include_role:
+        name: common
+        tasks_from: 'network.yml'
+    - include_role:
+        name: common
+        tasks_from: 'host.yml'
   roles:
-    - gitlab
+    - common
+  tasks:
+    - include_role:
+        name: common
+        tasks_from: 'ssl.yml'
+    - import_tasks: 'tasks.yml'
+  vars_files:
+    - 'vars/main.yml'
+    - 'vars/network.yml'
+    - 'vars/postgres.yml'
+    - 'vars/email.yml'