Merge branch 'master' into next

* master:
  Update NEWS and version for 2.0.3 release
  devel/upload: revert rsync -p
  export: add meaningful exit code
  Fix detecting of errors in export
  Implement gnt-cluster check-disk-sizes
  rpc: add rpc call for getting disk size
  bdev: Add function for reading actual disk size
  Implement --ignore-size in activate-disks
  Add ignore size support in _AssembleInstanceDisks
  Add a objects.Disk.UnsetSize() method
  bdev: allow ignoring of size in Assemble()
  Fix instance import net option
  Simplify the devel/upload script
  Add a Copy method to object.ConfigObject
  Extend call_node_start_master rpc with no_voting

Conflicts:

  daemons/ganeti-masterd
    s/SimpleConfigReader/SimpleStore/ VS start-master no-voting
    (kept both)

Signed-off-by: Guido Trotter <ultrotter@google.com>