## What this PR does
The etcd tenant module deploys by default with a large resource
limit/request and these values are not exposed at deploy time. This
patch lowers the default resources and adds a VPA to autoconfigure them
according to the real needs.
### Release note
```release-note
[etcd] Attach VPA to etcd and lower initial default resource requests.
```
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
- New Features
- Enabled automatic resource autoscaling for etcd with a Vertical Pod
Autoscaler (VPA).
- Chores
- Updated default etcd resource requests to CPU 1000m and memory 512Mi
(previously 4 and 1Gi), reflected across chart values and API schema.
- Changed the output location for generated CRDs.
- Documentation
- Revised README to document the new default CPU and memory values for
etcd.
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