## What this PR does
Updates kilo to v0.7.0 from the cozystack fork, replacing the local
image build (with patches applied via Dockerfile) with a pre-built image
from `ghcr.io/cozystack/cozystack/kilo`. This simplifies the build
process and removes the need for maintaining local patches.
Additionally, exposes the `--mtu` flag in kilo's `values.yaml` to allow
overriding the WireGuard interface MTU. The default value is set to
`auto`, letting kilo determine the optimal MTU automatically.
### Release note
```release-note
[kilo] Update kilo to v0.7.0 from cozystack fork; add configurable `mtu` parameter (default: auto) for WireGuard interface
```
<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit
* **New Features**
* Added configurable MTU support with automatic detection
* Added internal CIDR filtering capability for network mesh
configuration
* **Updates**
* Updated kilo image version to v0.7.0
* Transitioned to pre-built remote images
* **Improvements**
* Refined IP overlap and containment warning logic for better
diagnostics
<!-- end of auto-generated comment: release notes by coderabbit.ai -->
Andrei Kvapil
24c8b9c7a5