feat: complete puppet infrastructure (#29)

complete the implementation of puppet in kubernetes, taking many
features from the openvox helm chart and improving on them. changes from
helm are:
- using vault for storing secrets
- using g10k instead of r10k
- using a single shared g10k cronjob for all masters/compilers
- using a single shared /etc/puppetlabs/code directory (shared, cephfs)

changes:
- deploy puppet master and compiler servers with statefulset/deployment
- deploy puppetdb with postgresql backend, taking advantage of cnpg cluster and pooler
- deploy puppetboard
- all supporting configmaps, services, ingresses, and hpas
- added vaultstaticsecret for eyaml private keys
- configured secure mounting of eyaml keys at /var/lib/puppet/keys/
- updated base kustomization to include all 23 new puppet resource files

Reviewed-on: #29

apps/base/puppet/ingress_puppetdb.yaml

@@ -0,0 +1,28 @@
+---
+apiVersion: networking.k8s.io/v1
+kind: Ingress
+metadata:
+  annotations:
+    kubernetes.io/ingress.class: nginx
+    external-dns.alpha.kubernetes.io/hostname: puppetdb.k8s.syd1.au.unkin.net
+    external-dns.alpha.kubernetes.io/target: 198.18.200.0
+    nginx.ingress.kubernetes.io/ssl-passthrough: "true"
+  labels:
+    app.kubernetes.io/component: puppetdb
+    app.kubernetes.io/instance: puppetserver
+    app.kubernetes.io/name: puppetserver
+    app.kubernetes.io/version: 8.8.0
+  name: puppetdb
+  namespace: puppet
+spec:
+  rules:
+    - host: puppetdb.k8s.syd1.au.unkin.net
+      http:
+        paths:
+          - backend:
+              service:
+                name: puppetdb
+                port:
+                  number: 8081
+            path: /
+            pathType: Prefix