This was yet another socket with implicit auth - remove it completely
by reworking the only usecase for it - cluster-side health checks.
Now these health checks build a "regular" network Talos API client (as
they anyways work only controlplane nodes).
Refactor the check for controlplane nodes to use resources instead of
machine config directly (as machine config might not be always present).
Signed-off-by: Andrey Smirnov <andrey.smirnov@siderolabs.com>
da70cedfd2