Adding elasticsearch flag to prevent bootstrap loader from loading navtive support for CentOS

roles/elasticsearch/tasks/main.yml

@@ -50,6 +50,13 @@
               line='network.publish_host: {{ ansible_eth1.ipv4.address }}'"
   notify: 
     - restart elasticsearch
+    
+- name: Configuring elasticsearch
+  lineinfile: "dest=/etc/elasticsearch/elasticsearch.yml insertafter=EOF
+              regexp='^bootstrap.system_call_filter.*' 
+              line='bootstrap.system_call_filter: false'"
+  notify: 
+    - restart elasticsearch
               
 - name: make sure elasticsearch is started
   service: name="{{ elasticsearch_service_name }}" state="started"