feat(kube): add update logic to kube client

This commit adds an Update function to the client.
The Update function takes in the modified manifests and
the original manifests. It then iterates through the modified
objects, creates objects not found in kubernetes, and updates
objects that exists but have been modified. Finally, it
iterates through the original resources and checks to see if
they have been deleted in the modified configuration and then
proceeds to delete them. #690