Replaced depenencies by includes for performance reasons

roles/srv-proxy-7-4-core/tasks/main.yml

@@ -1,11 +1,9 @@
-- name: Load former meta dependencies once
-  block:
-  - name: Include moved dependencies
+- block:
+  - name: Include dependencies
     include_role:
       name: '{{ item }}'
     loop:
     - srv-web-7-6-https
     - srv-web-7-4-core
-  - set_fact:
-      run_once_srv_proxy_7_4_core: true
+  - include_tasks: utils/run_once.yml
   when: run_once_srv_proxy_7_4_core is not defined