Vault security hardening and role isolation

roles/vault/tasks/bootstrap/role_auth_userpass.yml

@@ -0,0 +1,10 @@
+---
+
+- include: ../shared/auth_backend.yml
+  vars:
+    auth_backend_description: A Username/Password Auth Backend primarily used for services needing to issue certificates
+    auth_backend_path: userpass
+    auth_backend_type: userpass
+  when: inventory_hostname == groups.vault|first
+- include: create_etcd_role.yml
+  when: inventory_hostname in groups.etcd