Set limitMEMLOCK for OS using systemd

tasks/elasticsearch-config.yml

@@ -24,6 +24,18 @@
   template: src=elasticsearch.j2 dest={{ default_file }} mode=0644 force=yes
   notify: restart elasticsearch
 
+#Copy the systemd specific file if systemd is installed
+- name: Make sure destination dir exists
+  file: path={{ sysd_config_file | dirname }} state=directory recurse=yes mode=0755
+  
+- name: Copy Systemd File for Instance
+  become: yes
+  copy: src=systemd/elasticsearch_override.conf dest={{ sysd_config_file }} mode=0644 force=yes
+  when: use_system_d and m_lock_enabled
+  notify:
+  - reload systemd configuration
+  - restart elasticsearch
+
 #Copy the logging.yml
 - name: Copy log4j2.properties File
   become: yes