imp: add node prometheusSimple suffix modifier

Author: johnalotoski

cardano-lib/generic-log-config.nix

@@ -53,7 +53,7 @@
         # tracing system.
         "EKGBackend"
         "Forwarder"
-        "PrometheusSimple 127.0.0.1 12798"
+        "PrometheusSimple suffix 127.0.0.1 12798"
 
         # Only one of the following can be enabled, which determines for format
         # of node logging to stdout.

cardano-lib/testnet-template/config.json

@@ -39,7 +39,7 @@
       "backends": [
         "EKGBackend",
         "Forwarder",
-        "PrometheusSimple 127.0.0.1 12798",
+        "PrometheusSimple suffix 127.0.0.1 12798",
         "Stdout HumanFormatColoured"
       ],
       "detail": "DNormal",