In 1154253 we:
Drop gzip flag from tar command for OVF archives
While support more OVF file formats is a worthy goal the approach
in 1154253 is going to cause serious issues for existing
Nova XenServer users who are already zipping their OVS images.
I would also point out that our utils.py xenserver plugins still
zips tarballs we create (see create_tarball) so the new code
causes internal inconsistencies as well.
This should fix SmokeStack.
Fixes LP Bug #1155783.
Change-Id: Iff6db314c0dec6df2e48d98db2a547f6624b9d9a
Dan Prince
7f1b1b69d7