setuid now going in bosh-stemcells

- this seems to be a side-affect of upgrading to concourse 3.4.X
- see issue here for more details

concourse/concourse#802

Signed-off-by: Tom Viehman <[email protected]>

Author: Zachary Gershman

ci/tasks/build.sh

@@ -63,6 +63,8 @@ done
 
 chown -R ubuntu:ubuntu bosh-linux-stemcell-builder
 
+sudo chmod u+s $(which sudo)
+
 sudo --preserve-env --set-home --user ubuntu -- /bin/bash --login -i <<SUDO
   set -e