UI is required for vault #3376 (#3377)

roles/vault/defaults/main.yml

@@ -49,7 +49,7 @@ vault_bind_address: 0.0.0.0
 vault_port: 8200
 vault_etcd_url: "{{ etcd_access_addresses }}"
 
-# 8y default lease
+# By default lease
 vault_default_lease_ttl: 70080h
 vault_max_lease_ttl: 87600h
 
@@ -76,6 +76,7 @@ vault_config:
   cluster_name: "kubernetes-vault"
   default_lease_ttl: "{{ vault_default_lease_ttl }}"
   max_lease_ttl: "{{ vault_max_lease_ttl }}"
+  ui: "true"
   listener:
     tcp:
       address: "{{ vault_bind_address }}:{{ vault_port }}"