Many changes to the nftables backend which will be used in the follow-up
PR with #4421.
1. Add support for chain policy: drop/accept.
2. Properly handle match on all IPs in the set (`0.0.0.0/0` like).
3. Implement conntrack state matching.
4. Implement multiple ifname matching in a single rule.
5. Implement anonymous counters.
Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>
Implement initial set of backend controllers/resources to handle
nftables chains/rules etc.
Replace the KubeSpan nftables operations with controller-based.
See #4421
Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>
This PR does those things:
- It allows API calls `MetaWrite` and `MetaRead` in maintenance mode.
- SystemInformation resource now waits for available META
- SystemInformation resource now overwrites UUID from META if there is an override
- META now supports "UUID override" and "unique token" keys
- ProvisionRequest now includes unique token and Talos version
For #7694
Signed-off-by: Dmitriy Matrenichev <dmitry.matrenichev@siderolabs.com>