Revert "virt_instance_create: try without this"

This reverts commit e92d1d070e.

tasks/virt_instance_create.yml

@@ -4,6 +4,8 @@
 - include_vars: dir=/srv/web/infra/ansible/vars/all/ ignore_files=README
 
 - name: get vm list
+  vars:
+    ansible_python_interpreter: "{{ hostvars[vmhost]['ansible_python']['executable'] }}"
   delegate_to: "{{ vmhost }}"
   virt: command=list_vms
   register: result