Ability to schedule ETCD encryption

1. Proposed title of this feature request
A> Ability to schedule ETCD encryption

2. What is the nature and description of the request?
A> ETCD encryption[1] weekly rollout is happening on peak hours (10 - 11 AM, GMT+7) and causing downtime.
CU is unable to access console during the rollout and even jobs/knative deployments are unable to be deployed.

3. Why does the customer need this? (List the business requirements here)
A> As this is happening during business hours and causing downtime every week,
They are looking for a way/feature to control the timing of these rollouts.

4. List any affected packages or components.
A> Kube-apiserver, oauth