tasks/_init.yml

+
+- include_vars:
+    file: "{{ sdm_system_vars_file }}" 
+  when: lookup('isvarsfile', sdm_system_vars_file)
+

tasks/configure.yml

 
+- import_tasks: _init.yml
+
 - import_role:
     name: package.dhcp
     tasks_from: configure

tasks/main.yml

 ---
 
+- import_tasks: _init.yml
+
 - name: create rc.d directory
   file:
     path: "{{ system_config_directory }}/rc.d/"

vars/main.yml

 ---
-package_packages: {
-   "freebsd": ["kea"]
-}
+package_packages: ["kea"]
 
-package_services: {
-  "freebsd": ["kea-dhcp4", "kea-dhcp6"]
-}
+package_services: ["kea-dhcp4", "kea-dhcp6"]