Three changes targeting the root cause of production up/down alerting:
1. Skip BruteForceProtection for /health and /health/live paths
(removes unnecessary Repo.get_by(IpBlock) DB query from every
k8s probe, matching the existing /socket/agent exemption).
2. Relax k8s readiness probe: periodSeconds 5→10, timeoutSeconds
2→5, failureThreshold 2→3, successThreshold 3→2 so transient
DB/Redis blips don't cascade into full service unavailability.
3. Use the persistent Towerops.Redix connection for health checks
instead of opening a brand-new TCP connection (handshake→AUTH→
PING→close) on every probe. Towerops.Redix.Fake gains a
set_ping_response/2 toggle for testing failure paths.
Graham McIntire
b5e3c1f977