feat: add vault/consul config for media terraform repos (#79)

Add Kubernetes auth roles, AppRole configs, Consul secret backend roles, Consul ACL policies, and Vault kv read policies for terraform-sonarr, terraform-radarr, and terraform-prowlarr.

Reviewed-on: #79
Co-authored-by: Ben Vincent <ben@unkin.net>
Co-committed-by: Ben Vincent <ben@unkin.net>

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

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

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

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

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

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