Revert "Revert "Adds whenever cookbook for updating cron.""

This reverts commit 0196db9d6df1b2aa71dd1f2de4e36b23cddf66c3.
Makes whenever cookbook project agnostic.

Change-Id: I9f238127f9cff063fe510acc6397372df3db265d
Make whenever recipe project agnostic.

Change-Id: Ia888a408dbdec9446db0edb8a23bad3b39a89575