Normalized run_once_, made openresty handlers without when aviable and forced flush in run_once when blocks to avoid handlers with when conditions

roles/svc-prx-openresty/tasks/main.yml

@@ -1,9 +1,6 @@
-- name: "For '{{ application_id }}': Load docker-compose"
-  include_role: 
-    name: docker-compose
-  when: run_once_svc_prx_openresty is not defined
-
-- name: Run the docker_postgres tasks once
-  set_fact:
-    run_once_svc_prx_openresty: true
+- block:
+  - name: "For '{{ application_id }}': Load docker-compose"
+    include_role: 
+      name: docker-compose
+  - include_tasks: utils/run_once.yml
   when: run_once_svc_prx_openresty is not defined