Users can now add a port suffix to the endpoints used by talosctl. Either
in the CLI flag or the ~/.talos/config. The default port is still 50000.
Signed-off-by: Philipp Sauter <philipp.sauter@siderolabs.com>
Instead of doing our homegrown "try all the endpoints" method,
use gRPC load-balancing across configured endpoints.
Generalize load-balancer via gRPC resolver we had in Talos API client,
use it in remote certificate generator code. Generalized resolver is
still under `machinery/`, as `pkg/grpc` is not in `machinery/`, and we
can't depend on Talos code from `machinery/`.
Related to: #3068
Full fix for #3068 requires dynamic updates to control plane endpoints
while apid is running, this is coming in the next PR.
Signed-off-by: Andrey Smirnov <smirnov.andrey@gmail.com>
