Add site.yml for testing purposes

site.yml

+---
+- name: Test role
+  hosts: "*"
+
+  roles:
+    - role: role-manage-users
+      vars:
+        human_users:
+          - name: "dummy"
+            shell: /bin/bash
+            password:
+            sudo: false
+
+    - role: role-manage-users
+      vars:
+        absent_users:
+          - "dummy"