Add a basic unittest for uidpool.RequestUnusedUid
Add a basic unittest for uidpool.RequestUnusedUid

Signed-off-by: Balazs Lecz <024c580adbe3324c61e798a30c60cf94ec02e89f@google.com>
Reviewed-by: Iustin Pop <acf83a5274f31a43af6b914614365999469c1a31@google.com>

apyrgio/ganeti,onponomarev/ganeti,andir/ganeti,ganeti-github-testing/ganeti-test-1,mbakke/ganeti,yiannist/ganeti,mbakke/ganeti,apyrgio/snf-ganeti,apyrgio/snf-ganeti,andir/ganeti,dimara/ganeti,grnet/snf-ganeti,dimara/ganeti,mbakke/ganeti,yiannist/ganeti,andir/ganeti,leshchevds/ganeti,yiannist/ganeti,grnet/snf-ganeti,bitemyapp/ganeti,leshchevds/ganeti,ganeti/ganeti,bitemyapp/ganeti,apyrgio/ganeti,ganeti-github-testing/ganeti-test-1,ganeti/ganeti,leshchevds/ganeti,ganeti/ganeti,onponomarev/ganeti