Change model storage initializer repository.

[LiuYuWei]

WHY: Change resource from gcr.io to Dockerhub. HOW: Change yaml files.

Signed-off-by: simonliu simon3458@gmail.com

PR checklist

• [X ] Ensure you have added or ran the appropriate tests for your PR.
• [X ] DCO signed

What type of PR is this? Change version

What this PR does / why we need it: Change resource from gcr.io to Dockerhub.

Which issue(s) this PR fixes: sc-26877

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

N/A

Change kfserving-storage-initializer resource from gcr.io to Dockerhub.