QA: Disable reinstall test for diskless instances
QA: Disable reinstall test for diskless instances

Signed-off-by: Michael Hanselmann <68b67885ff74281219b4a4be33cc20fd45078d7c@google.com>
Reviewed-by: Bernardo Dal Seno <dcdd79c5479cb9d1329ec01d126f02cb045aa103@google.com>

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