- Implement exportable TolerationSet with the following differences:
  - Change map key to a string to ensure it is deterministic.
    The old key was a struct that included a pointer.
  - Sort the outputted list by this key to ensure the order is deterministic.
  - Get the tolerations from the deployment instead of the pod as pod tolerations
    are sometimes modified by the system. We only want user provided tolerations
    in our deployment.
- Modify tests to try duplicate keys from different structs. The old way tested duplicate
  keys using the same structs.
Signed-off-by: Rohan CJ <rohantmp@gmail.com>
(cherry picked from commit b16d55f4)