This includes updates to CI config, vendor files, etc.
I've hard-coded the k8s depedency at 1.13.4 to keep it inline with what
we currently have and to make sure a another run of `go mod tidy`
doesn't accidentally update it to an unexpected version.
Thanks to hectorj2f for carrying this along.
* Add k8s.io/client-go/tools/cache package
* Add cache controller
* Add pod creator and terminator
* Pod Synchronizer
* Clean up
* Add back reconcile
* Remove unnecessary space in log
* Incorprate feedbacks
* dep ensure
* Fix the syntax error
* Fix the merge errors
* Minor Refactor
* Set status
* Pass context together with the pod to the pod channel
* Change to use flag to specify the number of pod sync workers
* Remove the unused const
* Use Stable PROD Region WestUS in Test
EastUS2EUAP is not reliable