Harden production workflows and agent admission

deploy/showcase/agents/prometheus_owned.toml

@@ -1,4 +1,4 @@
-hostname = "agent-prometheus-owned"
+agent_id = "agent-05"
 state_dir = "/var/lib/monlet-agent"
 
 [labels]
@@ -8,7 +8,6 @@ role = "showcase"
 [server]
 enabled = true
 url = "http://server:8000"
-token = "monlet-dev-token"
 heartbeat_interval = "5s"
 batch_interval = "3s"