Automatic merge from submit-queue.

Automated cherry pick of #61911 upstream release 1.10

**What this PR does / why we need it:**
PR addresses two issues:
1. Update Istio addon version to latest stable 0.6.0 (required for e2e test integration).
2. Mirror images in gcr.io for security scanning, since this is an addon.

Fixes #61910 

**Release note**:
```release-note
Update version of Istio addon from 0.5.1 to 0.6.0.
```