Fix build broken by 96a56b954eec6c2e93e0b9f696bed08c8414d1d7
[google|compute] Also tweak default disk in tests
Merge branch 'master' of github.com:fog/fog
Fix Disk tests
Lists disks isn't a valid test since response varies greatly by disk.
Merge pull request #2849 from icco/master

Fix bugs in disk tests