enable prometheus ports, configure prometheus server

manifests/prometheus/configmap.yaml

@@ -0,0 +1,16 @@
+---
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  namespace: darkdork-dev
+  name: prometheus-config
+data:
+  prometheus.yaml: |
+    global:
+      scrape_interval: 15s
+
+    scrape_configs:
+      - job_name: 'pleroma'
+        scheme: http
+        static_configs:
+        - targets: ['pleroma:4021']