Use new query function for exports in gnt-backup
Use new query function for exports in gnt-backup

Reviewed-by: iustinp


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