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
[etcd] Attach VPA to etcd and lower initial default resource requests.
```
Signed-off-by: Timofei Larkin <lllamnyp@gmail.com>
1. Add a `commonName` to every certificate.
2. Move 127.0.0.1 from DNS names to IP Addresses in the certificate
spec.
3. Add **client** auth usage to the etcd-**server** certificate (yes,
that's necessary), because etcd queries itself using its
[server cert as a client cert](https://github.com/etcd-io/etcd/issues/9785#issuecomment-432438748).
4. Default all CA certificates' durations to 10 years.
5. Set subject org to release namespace and OU to name so that subjects
are unique
