Add envoy metrics to redis

databases/redis.nomad

@@ -19,6 +19,9 @@ job "redis" {
         host_network = "loopback"
         to = 6379
       }
+      port "envoy_metrics" {
+        to = 9123
+      }
     }
 
     service {
@@ -29,6 +32,10 @@ job "redis" {
         sidecar_service {
           proxy {
             local_service_port = 6379
+
+            config {
+              envoy_prometheus_bind_addr = "0.0.0.0:9123"
+            }
           }
         }
 
@@ -46,6 +53,10 @@ job "redis" {
       #   interval = "10s"
       #   timeout  = "2s"
       # }
+
+      meta {
+        envoy_metrics_addr = "${NOMAD_ADDR_envoy_metrics}"
+      }
     }
 
     task "redis" {