Without that the daemonset "metadata-agent" return:
```pods "metadata-agent-" is forbidden: unable to validate against any pod security policy: [spec.containers[0].securityContext.containers[0].hostPort: Invalid value: 8799: Host port 8799 is not allowed to be used. Allowed ports: []]```
Automatic merge from submit-queue (batch tested with PRs 62590, 62818, 63015, 62922, 63000). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.
Remove METADATA_AGENT_VERSION config option
**What this PR does / why we need it**:
Remove METADATA_AGENT_VERSION configuration option. To keep Metadata Agent version consistent across Kubernetes deployments.
**Release note**:
```release-note
Remove METADATA_AGENT_VERSION configuration option.
```