fixed a typo in lxc-net role

Change-Id: I83b6d4b0eab60e85d6856300cb0bab8661d57f10
diff --git a/playbooks/roles/lab-lava-lxcnet/tasks/main.yml b/playbooks/roles/lab-lava-lxcnet/tasks/main.yml
index d1b0718..5b06343 100644
--- a/playbooks/roles/lab-lava-lxcnet/tasks/main.yml
+++ b/playbooks/roles/lab-lava-lxcnet/tasks/main.yml
@@ -26,7 +26,7 @@
      owner: root
      group: root
      mode: 0644
-     when: ansible_lsb.codename == "buster"
+   when: ansible_lsb.codename == "buster"
    notify: lxc - restart lxc
 
  - name: Modify LXC default.conf lxc 2.0 and older
@@ -36,6 +36,6 @@
      owner: root
      group: root
      mode: 0644
-     when: ansible_lsb.codename == "stretch"
+   when: ansible_lsb.codename == "stretch"
    notify: lxc - restart lxc