Automatic merge from submit-queue (batch tested with PRs 46252, 45524, 46236, 46277, 46522)

Make GCE load-balancers create health checks for nodes

From #14661. Proposal on kubernetes/community#552. Fixes #46313.

Bullet points:
- Create nodes health check and firewall (for health checking) for non-OnlyLocal service.
- Create local traffic health check and firewall (for health checking) for OnlyLocal service.
- Version skew: 
   - Don't create nodes health check if any nodes has version < 1.7.0.
   - Don't backfill nodes health check on existing LBs unless users explicitly trigger it.

**Release note**:

```release-note
GCE Cloud Provider: New created LoadBalancer type Service now have health checks for nodes by default.
An existing LoadBalancer will have health check attached to it when:
- Change Service.Spec.Type from LoadBalancer to others and flip it back.
- Any effective change on Service.Spec.ExternalTrafficPolicy.
```