The storage pool tests have host-specific versions which I neglected to
update in commit c44930d932203b4a58dccbbeaa814fff6cea8216 thus breaking
the test-suite on non-linux OSes.
Fixes: c44930d932203b4a58dccbbeaa814fff6cea8216
Signed-off-by: Peter Krempa <pkrempa@redhat.com>