Temporarily stop running OpenSUSE functtests
Temporarily stop running OpenSUSE functtests

In the last few hours, OpenSUSE has published an updated cloud image
with a mismatched SHA2-256 checksum file, so the functest jobs has
started failing. We'll revert this as soon as it's working again.

Change-Id: Id4cb15456db779a22ffc9b6fd6916bcb9e5d8270

openstack/diskimage-builder,openstack/diskimage-builder