Automatic merge from submit-queue (batch tested with PRs 47922, 47195, 47241, 47095, 47401)

Fix firewall e2e test for multizone CIs

Fixes #46894.

- Getting node/master tags from config instead of instance.
- Don't assume instance always run in default zone.

/assign @freehan 

**Release note**:

```release-note
NONE
```