This commit modifies the k8s operator to wrap its logger using the logtail
logger provided via the tsnet server. This causes any logs written by
the operator to make their way to Tailscale in the same fashion as
wireguard logs to be used by support.
Operator logs can be determined by the "k8s:" prefix within the log line.
This functionality can also be opted-out of entirely using the
"TS_NO_LOGS_NO_SUPPORT" environment variable.
This is implemented by reusing kzap's core with a different sink that
just writes to the logger.Logf function provided.
Fixes https://github.com/tailscale/corp/issues/32037
Signed-off-by: David Bond <davidsbond93@gmail.com>
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