test: verify fields in spawn{Sync} errors
This commit validates the properties of ENOENT error objects returned by spawn() and spawnSync(). This represents the tests requested in #721.
R=@rvagg
Do not update/delete: Banner broadcast message test data
Do not update/delete: Notification broadcast message test data
This commit validates the properties of ENOENT error objects returned by spawn() and spawnSync(). This represents the tests requested in #721.
R=@rvagg