Add auth and state access for terraform-authentik

- K8s auth role for Woodpecker CI (terraform-authentik SA)
- AppRole for local runs
- Consul secret backend role for state storage
- Consul ACL policy for infra/terraform/authentik/ key prefix
- Vault policy granting creds access to both auth methods

config/auth_approle_role/approle/terraform_authentik.yaml

@@ -0,0 +1,9 @@
+token_ttl: 120
+token_max_ttl: 120
+bind_secret_id: false
+token_bound_cidrs:
+  - "10.10.12.200/32"
+  - "198.18.25.102/32"
+  - "198.18.26.91/32"
+  - "198.18.27.40/32"
+use_deterministic_role_id: true

config/auth_kubernetes_role/k8s/au/syd1/woodpecker_terraform_authentik.yaml

@@ -0,0 +1,7 @@
+bound_service_account_names:
+  - terraform-authentik
+bound_service_account_namespaces:
+  - woodpecker
+token_ttl: 600
+token_max_ttl: 600
+audience: https://kubernetes.default.svc.cluster.local

config/consul_secret_backend_role/consul_root/au/syd1/terraform_authentik.yaml

@@ -0,0 +1,5 @@
+consul_roles:
+  - terraform-authentik
+ttl: 120
+max_ttl: 300
+datacenters: []

policies/consul_root/au/syd1/creds/terraform-authentik.yaml

@@ -0,0 +1,11 @@
+---
+rules:
+  - path: "consul_root/au/syd1/creds/terraform-authentik"
+    capabilities:
+      - read
+
+auth:
+  approle:
+    - terraform_authentik
+  k8s/au/syd1:
+    - woodpecker_terraform_authentik

resources/secret_backend/consul_root/au/syd1/terraform-authentik.hcl

@@ -0,0 +1,7 @@
+key_prefix "infra/terraform/authentik/" {
+  policy = "write"
+}
+
+session_prefix "" {
+  policy = "write"
+}