sensible default kamon config

conf/base.conf

@@ -665,22 +665,54 @@ akka {
 }
 
 kamon {
+  metric {
+    tick-interval = 2 second
+    track-unmatched-entities = no
+    filters {
+      trace {
+        includes = [ ]
+        excludes = [ ]
+      }
+    }
+  }
+
+ statsd {
+    hostname = ""
+    port = 8125
+
+    # value must be equal or greater than the kamon.metrics.tick-interval setting
+    flush-interval = 2 second
+
+    # Max packet size for UDP metrics data sent to StatsD
+    max-packet-size = 2048 bytes
+
+    subscriptions {
+      histogram       = [ "**" ]
+      min-max-counter = [ "**" ]
+      gauge           = [ "**" ]
+      counter         = [ "**" ]
+      trace           = [ "**" ]
+      trace-segment   = [ "**" ]
+      system-metric   = [ "**" ]
+      http-server     = [ "**" ]
+    }
+
+    simple-metric-key-generator {
+
+      # Application prefix for all metrics pushed to StatsD. The default namespacing scheme for metrics follows
+      # this pattern: application.host.entity.entity-name.metric-name
+      application = "local"
+
+      # application.entity.entity-name.metric-name
+      include-hostname = false
+
+      metric-key-generator = lila.api.KeepDotsMetricKeyGenerator
+
+      metric-name-normalization-strategy = keep-dots
+    }
+  }
+
   modules {
-    kamon-scala {
-      auto-start = no
-      requires-aspectj = no
-      extension-id = none
-    }
-    kamon-akka {
-      auto-start = no
-      requires-aspectj = no
-      extension-id = "kamon.akka.Akka"
-    }
-    kamon-play {
-      auto-start = no
-      requires-aspectj = no
-      extension-id = "kamon.play.Play"
-    }
     kamon-statsd {
       auto-start = no
       requires-aspectj = no