feat: initial puppet deployment (#25)

working towards a larger, redundant, autoscaling and simple puppet
implementation in kubernetes. this was originally based on the openvox
helm chart with several improvements (not all in this pr)

- use of cnpg instead of single bitnamilegacy postgres container
- use for g10k instead of r10k
- run one instance of g10k per namespace, instead of per-pod
- store only keep one copy of the environments/branches (instead of per-pod)
- change g10k to native cronjob instead of hacky implementation
- use vault secrets

part one adds:

- cnpg puppetdb pgsql cluster
- cnpg puppetdb pgpooler
- persistent volume claims for puppet, puppetdb, the code repository, etc

Reviewed-on: #25

argocd/applicationsets/platform.yaml

@@ -14,6 +14,7 @@ spec:
       - path: apps/overlays/*/reflector-system
       - path: apps/overlays/*/reloader-system
       - path: apps/overlays/*/jfrog
+      - path: apps/overlays/*/puppet
       - path: apps/overlays/*/woodpecker
   template:
     metadata:

argocd/projects/platform.yaml

@@ -17,6 +17,8 @@ spec:
       server: https://kubernetes.default.svc
     - namespace: 'jfrog'
       server: https://kubernetes.default.svc
+    - namespace: 'puppet'
+      server: https://kubernetes.default.svc
     - namespace: 'woodpecker'
       server: https://kubernetes.default.svc
   clusterResourceWhitelist: