Add verifier_url to reference configuration file (#1158)

Signed-off-by: Sergio Arroutbi <[email protected]>

Author: sarroutbi

keylime-agent.conf

@@ -378,3 +378,7 @@ attestation_interval_seconds = 60
 # To override enable_authentication, set
 # KEYLIME_AGENT_ENABLE_AUTHENTICATION environment variable.
 enable_authentication = false
+
+# Verifier URL (Push Model specific).
+# Verifier URL containing schema, host and port
+verifier_url = "https://localhost:8891"