Burnin: Use iallocator in import/export
Burnin: Use iallocator in import/export

Currently the iallocator option is ignored by burnin at import/export
time even if passed in. With this patch it becomes used. The log message
used by the importer is also changed to reflect this.

This patch also improves import/export on the non-iallocator case:
  - The secondary node is not passed anymore on non-mirrored templates
  - On mirrored templates the secondary node is logged

Reviewed-by: imsnah



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