enable username space

roles/sysctl_max_user_name_spaces/files/max_user_name_spaces.conf

+user.max_user_namespaces=10000

roles/sysctl_max_user_name_spaces/tasks/main.yml

+- name: copying networking config for sysctl
+  copy:
+   mode: '640'
+   src:  max_user_name_spaces.conf
+   dest: '/etc/sysctl.d'
+  become: true
+
+- name: update max_user_name_spaces variable for live system
+  sysctl:
+   name: user.max_user_namespaces
+   value: "10000"
+  become: true