chore(sops): Add some more strings to encrypt

.sops.yaml

 creation_rules:
   - path_regex: (clusters|apps)/k8s01/.*.yaml
-    encrypted_regex: ^(data|stringData|email|dnsZones?|dnsNames?|hosts?|tang|externalURL|.*-secret|.*-url)$
+    encrypted_regex: ^(data|stringData|email|dnsZones?|dnsNames?|hosts?|tang|externalURL|.*-secret|.*-url|.*Secret|.*-domain)$
     pgp: >-
       286791FB6648539775DB31B8FCB98C2A3EC6F601,
       B137EE1549DFAF960DD1E2B15147025FB9F09E07