Add roles and variables

ansible/roles/common/tasks/main.yml

@@ -0,0 +1,7 @@
+- name: Check memory and swap usage 
+  command: free -m
+  register: memory_info
+  changed_when: false
+- name: Run the equivalent of "apt-get update" as a separate step
+  ansible.builtin.apt:
+    update_cache: yes