Fix node key issue
Cleanup whitespace
Fix node_key permissions

Change-Id: I94c319a78230a145597680111fcfb2caf95814db
(cherry picked from commit 007529620e9f8f456d25d676533ad96f1b71a12e)
diff --git a/roles/xos-vm-install/templates/xos-setup-vars.yml.j2 b/roles/xos-vm-install/templates/xos-setup-vars.yml.j2
index cb96393..de7838e 100644
--- a/roles/xos-vm-install/templates/xos-setup-vars.yml.j2
+++ b/roles/xos-vm-install/templates/xos-setup-vars.yml.j2
@@ -15,8 +15,4 @@
 service_profile_repo_dest: "{{ service_profile_repo_dest }}"
 service_profile_repo_branch: "{{ service_profile_repo_branch }}"
 
-{% if on_maas %}
-node_private_key: "{{ maas_node_key }}"
-{% else %}
-node_private_key: "~/.ssh/id_rsa"
-{% endif %}
+node_private_key: "{{ ansible_user_dir }}/node_key"