secrets: add IPA keytab for nixos.sweet.home

.sops.yaml

@@ -155,3 +155,10 @@ creation_rules:
           - *lxc-tailscale-router
           - *proxmox-tailscale-router
           - *linode-tailscale-router
+
+  # Host keytab for nixos.sweet.home FreeIPA enrollment (binary sops file).
+  # Generated by scripts/ipa/create-nixos-ipa-host-account.sh.
+  - path_regex: secrets/nixos.sweet.home\.keytab$
+    key_groups:
+      - age:
+          - *admin