- when booting instances, if src_vol.display_name in template volume is
  None, use generic template name for display_name
- fix invalid exception handling/printing in delete_instances.py and
  delete_volumes.py
- delete all available volumes and instances in delete_instances.py and
  delete_volumes.py, instead of just errored ones (assuming that was the
  point of cleanup scripts)
- handle uppercase and lowercase statuses in delete_instances.py and
  delete_volumes.py