Add sandbox lib (#29) * Add sandbox lib Signed-off-by: Raphaël Pinson <raphael@isovalent.com> * Fix test Signed-off-by: Raphaël Pinson <raphael@isovalent.com> * Fix tests Signed-off-by: Raphaël Pinson <raphael@isovalent.com> --------- Signed-off-by: Raphaël Pinson <raphael@isovalent.com>