Force deploy_interface for cleaning to be iscsi

Test is currently picking a random interface, reusing the one
that was in the previous node. If the deploy_interce is ansible,
the cleanup step fails because it is expecting a 'tags' key to be
present in the cleanup dictionary.

Change-Id: I28dca9a40b73276ab4d0146d9d67b7a0db3b3c54
1 file changed