storage functional tests

[Nir Soffer]

Hi Infra,

I noticed that the storage functional tests are broken:

http://jenkins.ovirt.org/job/vdsm_storage_functional_tests/24/

The test were ignoring the VDSM_TEST_STORAGE_TYPES and VDSM_TEST_STORAGE_VERSIONS
environment variables.

The problem was exporting VDSM_TEST_ variables in the shell, then running the tests with sudo.
sudo does not pass all the environment variables to commands because of security considerations.
The variables must be defined inline.

I fixed the configuration, and now only the localfs types and versions 0 and 3 are tested. However,
the test are still broken:

http://jenkins.ovirt.org/job/vdsm_storage_functional_tests/25/

Can you check this?

Nir