Read inventory directly

tasks/more.yml

 ---
 # file: roles/commonconnect/tasks/more.yml
 
-- name: "Read facts"
-  shell: cat ~/.ansible/hostvars/{{ inventory_name }}
-  become: no
-  register: result_facts
-
-- set_fact: facts="{{ result_facts.stdout | from_json }}"
+- set_fact: facts="{{ lookup('file','~/.ansible/hostvars/{{ inventory_name }}') | from_json }}"
 
 - name: "Add Hosts to Hostfile"
   lineinfile:
@@ -14,4 +9,4 @@
     regexp: '.* {{ item }}$'
     line: '{{ facts[item].static_ipv4 }} {{ item }}'
     state: 'present'
-  with_items: '{{ facts }}'
+  with_items: '{{ facts|default([]) }}'