prometheus: scrape pg, redis instances by default

prometheus/prometheus_targets.yml

@@ -1,13 +1,4 @@
 ---
-- labels:
-    job: node
-  targets:
-    # Uncomment these if you want to monitor PostgreSQL / Redis via Prometheus.
-    #- pgsql:9187
-    #- codeintel-db:9187
-    #- codeinsights-db:9187
-    #- redis-cache:9121
-    #- redis-store:9121
 - labels:
     job: node
   targets:
@@ -58,3 +49,23 @@
     job: symbols
   targets:
     - symbols-0:6060
+- labels:
+    job: pgsql
+  targets:
+    - pgsql:9187
+- labels:
+    job: codeintel-db
+  targets:
+    - codeintel-db:9187
+- labels:
+    job: codeinsights-db
+  targets:
+    - codeinsights-db:9187
+- labels:
+    job: redis-cache
+  targets:
+    - redis-cache:9121
+- labels:
+    job: redis-store
+  targets:
+    - redis-store:9121