Move the Recorder reconciler and its object specs into
k8s-operator/reconciler/recorder, following the earlier ProxyClass,
DNSConfig and nameserver moves, and switch it to the shared finalizer,
resource tracker and CreateOrUpdate helpers.
Hoist two duplicated helpers into tailscaled.PrefsFromStateSecret and
reconciler.IsOptimisticLockError, and add
k8s-operator/reconciler/reconcilertest for the test helpers each package
had copied, including one fake Tailscale API client in place of four.
No behaviour change; the Recorder's watches and labels are untouched.
Fixestailscale/corp#37086
Signed-off-by: David Bond <davidsbond93@gmail.com>
David Bond
7ee121a0fb