Pass unique_vault_prefixes to include_role

This puts us on par with how the playbook/process_secrets.yml does it

Author: mbaldessari

roles/load_secrets/tasks/main.yml

@@ -46,3 +46,4 @@
     kubernetes_secret_objects: "{{ secrets_results.kubernetes_secret_objects }}"
     vault_policies: "{{ secrets_results.vault_policies }}"
     parsed_secrets: "{{ secrets_results.parsed_secrets }}"
+    unique_vault_prefixes: "{{ secrets_results.unique_vault_prefixes }}"