[BUG] Webhook failed to load root certificates: unable to parse bytes as PEM block

[cheyang]

What is your environment(Kubernetes version, Fluid version, etc.)

Describe the bug

1. Install helm chart

helm install fluid fluid

2. Create statefulse, it works fine

3. Upgrade the helm chart

helm upgrade --set runtime.jindo.enabled=true  --set runtime.alluxio.enabled=true fluid fluid

4. From the new created statefulset

Type     Reason        Age                   From                    Message
  ----     ------        ----                  ----                    -------
  Warning  FailedCreate  85s (x17 over 6m53s)  statefulset-controller  create Pod shared-data-jindofs-master-0 in 
StatefulSet shared-data-jindofs-master failed error: 
Internal error occurred: failed calling webhook "schedulepod.fluid.io": 
could not get REST client: unable to load root certificates: unable to parse bytes as PEM block

What you expect to happen:

How to reproduce it

Additional Information

[yangyuliufeng]

After the update, the MutatingWebhookConfiguration with CA has been updated.